Measuring tool

Abstract

The present application relates to the technical field of medical devices, and provides a measuring tool for measuring the size of the sulcus of the penis, comprising a positioning plate, a measuring base plate, a first measuring piece, a second measuring piece, a third measuring piece and a fourth measuring piece. The measuring base plate is hinged to the positioning plate, and the measuring base plate can be bent and deformed. The first measuring piece and the second measuring piece are arranged at intervals along a second direction on the measuring base plate. The fourth measuring piece is located between the third measuring piece and the hinge shaft. When the positioning plate and the measuring base plate rotate around the hinge shaft, one end of the third measuring piece is fixed to one of the positioning plate and the measuring base plate, and the other end moves relative to the third measuring piece. The two ends of the fourth measuring piece can be fixed to the positioning plate and the measuring base plate respectively, so that the measuring base plate is bent and fits the curved surface of the sulcus. In this way, through the cooperative measurement of the four measuring pieces, more accurate shape and size data of the sulcus of the patient can be obtained, and preparation work for subsequent surgery is completed.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a measuring tool. Background Technology

[0002] Phimosis or paraphimosis is a common male reproductive problem. With the continuous improvement of people's living standards and health awareness, higher demands are being placed on their reproductive health. Phimosis easily traps dirt and grime, leading to balanitis, affecting normal sexual life, and increasing the risk of cervicitis and cervical cancer in sexual partners. Circumcision is an effective treatment for phimosis and paraphimosis.

[0003] Currently, circumcision for phimosis is typically performed using either conventional circumcision or a surgical stapler. Conventional circumcision involves manual cutting and suturing, resulting in uneven incisions, significant intraoperative bleeding, and prolonged surgery time. While existing surgical staplers offer advantages such as smooth incisions, shorter surgery times, and ease of operation, they still have certain drawbacks. Current tools for measuring the coronal sulcus cannot accurately measure the actual shape and size of the structures at this area. Furthermore, the circular structure of existing circumcision staplers is mismatched with the shape of the penis, easily causing damage to the foreskin structures and intraoperative bleeding, thus affecting the surgical outcome.

[0004] Therefore, a measurement tool is urgently needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a measuring tool that can accurately measure the actual shape and size of the structure at the coronal sulcus.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Measuring tools used to measure the coronal sulcus size of the penis, including:

[0008] The positioning plate has a first through hole in the middle and includes two first abutting parts spaced apart along a first direction.

[0009] The measuring base plate is hinged to the positioning plate. The measuring base plate is flexible and deformable and has a second through hole in its middle. When the measuring base plate overlaps with the positioning plate, the two first abutting parts are exposed in the second through hole.

[0010] The first measuring element and the second measuring element are spaced apart on the measuring base plate along the second direction, and the first measuring element and / or the second measuring element are slidably connected to the measuring base plate along the second direction. Both the first measuring element and the second measuring element are provided with a second abutting part. The movement trajectory of the second abutting part coincides with the center line of the line connecting the two first abutting parts in the orthographic projection of the positioning plate.

[0011] The third and fourth measuring elements are located between the third measuring element and the hinge shaft. When the positioning plate and the measuring base plate rotate around the hinge shaft, one end of the third measuring element is fixed to one of the positioning plate and the measuring base plate, while the other end moves relative to the third measuring element. Both ends of the fourth measuring element can be fixed to the positioning plate and the measuring base plate respectively, so that the measuring base plate bends and fits against the arc surface of the coronal sulcus.

[0012] The first direction mentioned above is perpendicular to the second direction mentioned above.

[0013] As a preferred technical solution of the above-mentioned measuring tool, the first measuring component is slidably connected to the measuring base plate, the second measuring component is fixed to the measuring base plate, the first measuring component is provided with a marker pointer, and the second measuring component or the measuring base plate is provided with multiple position marks along the second direction, and the marker pointer can select one of the position marks.

[0014] As a preferred technical solution of the above-mentioned measuring tool, the first measuring element is provided with a protruding insert, the insert is provided with a marking pointer, the second measuring element is provided with a slot, the slot is provided with multiple position marks along the second direction, and the insert and the slot are slidably connected along the second direction.

[0015] As a preferred technical solution of the above-mentioned measuring tool, both side walls of the slot are provided with anti-retraction structures. The insert includes a sliding part and a retaining part detachably connected thereto. The retaining part is located at the end of the slot pointing towards the hinge axis. The marker pointer is located in the retaining part. The sliding part can reciprocate in the slot along the second direction. The anti-retraction structure makes the retaining part only able to move unidirectionally in the slot towards the side closer to the hinge axis along the second direction.

[0016] As a preferred technical solution of the above-mentioned measuring tool, the first measuring element is connected to a slider, the measuring base plate is provided with a groove along the second direction, the slider extends into the groove and can slide relative to the measuring base plate along the second direction.

[0017] As a preferred technical solution of the above-mentioned measuring tool, an arc support is provided on one side of each of the two adjacent second contact portions to straighten the penis along the second direction.

[0018] As a preferred technical solution of the above-mentioned measuring tool, the third measuring component and the fourth measuring component are provided with multiple slots along the length direction, and each of the above-mentioned slots can be inserted into one of the above-mentioned positioning plate and the above-mentioned measuring base plate.

[0019] As a preferred technical solution of the above-mentioned measuring tool, one end of the third measuring component and the fourth measuring component is hinged to the measuring base plate, and the slot can be inserted into the measuring base plate.

[0020] As a preferred technical solution of the above-mentioned measuring tool, the third measuring element and the fourth measuring element have a stored state and a supported state relative to the positioning plate. When in the stored state, the third measuring element and the fourth measuring element are both attached to the positioning plate. When in the supported state, the third measuring element and the fourth measuring element are both perpendicular to the positioning plate.

[0021] As a preferred technical solution of the above-mentioned measuring tool, the positioning plate is provided with at least two storage slots, and the third measuring component and the fourth measuring component are respectively located in one of the storage slots. When in the storage state, the end faces of the third measuring component and the fourth measuring component are flush with the end face of the storage slot in the depth direction. When in the support state, the end faces of the third measuring component and the fourth measuring component abut against one end face of the storage slot in the length direction.

[0022] Beneficial effects of this invention:

[0023] This application provides a measuring tool for measuring the coronal sulcus size of the penis, including a positioning plate, a measuring base plate, a first measuring element, a second measuring element, a third measuring element, and a fourth measuring element. The positioning plate has a first through hole in its center and includes two first abutment portions spaced apart along a first direction. A measuring base plate is hinged to the positioning plate, and the measuring base plate is bendable and deformable, with a second through hole in its center. When the measuring base plate overlaps with the positioning plate, the two first abutment portions are exposed within the second through hole. A first measuring element and a second measuring element are spaced apart on the measuring base plate along a second direction, and the first measuring element and / or the second measuring element are slidably connected to the measuring base plate along the second direction. Both the first and second measuring elements have second abutment portions, and the movement trajectory of the second abutment portions coincides with the center line of the line connecting the two first abutment portions in the orthographic projection of the positioning plate. A fourth measuring element is located between the third measuring element and the hinge shaft. When the positioning plate and the measuring base plate rotate around the hinge shaft, one end of the third measuring element is fixed to one of the positioning plate and the measuring base plate, while the other end moves relative to the third measuring element. Both ends of the fourth measuring element can be fixed to the positioning plate and the measuring base plate respectively, causing the measuring base plate to bend and conform to the arc surface of the coronal sulcus. The first direction is perpendicular to the second direction.

[0024] Thus, by moving the first and second measuring pieces relative to each other along the second direction, the verticality of the long axis at the coronal sulcus can be measured. By measuring the relative rotation of the base plate to the positioning plate, the rotation angle between the two, i.e. the slope of the coronal sulcus, can be measured by the third measuring piece. Then, by using the fourth measuring piece, the measuring base plate is bent into an arc surface that fits the coronal sulcus, so as to obtain more accurate data at the coronal sulcus of the patient's penis, thus preparing for subsequent surgery. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of the storage state of the measuring tool provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the measurement state of the measuring tool provided in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the storage state of the positioning plate provided in an embodiment of the present invention;

[0029] Figure 4This is a structural schematic diagram of the measurement state of the positioning plate provided in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the measuring base plate and the second measuring element provided in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the first measuring element provided in an embodiment of the present invention.

[0032] In the picture:

[0033] 10. Positioning plate; 11. First through hole;

[0034] 20. Measuring base plate; 21. Second through hole; 22. Sliding groove;

[0035] 31. First measuring component; 311. Insert; 312. Slider; 313. Arc support; 32. Second measuring component; 321. Slot;

[0036] 41. Third measuring component; 411. Slot; 42. Fourth measuring component. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0041] like Figures 1 to 6 As shown, this application provides a measuring tool for measuring the coronal sulcus size of the penis, including a positioning plate 10, a measuring base plate 20, a first measuring element 31, a second measuring element 32, a third measuring element 41, and a fourth measuring element 42. The positioning plate 10 has a first through hole 11 in its center and includes two first abutment portions spaced apart along a first direction. The measuring base plate 20 is hinged to the positioning plate 10, and is bendable and deformable, with a second through hole 21 in its center. When the measuring base plate 20 overlaps with the positioning plate 10, the two first abutment portions are exposed within the second through hole 21. The first measuring element 31 and the second measuring element 32 are spaced apart along a second direction on the measuring base plate 20, and the first measuring element 31 and / or the second measuring element 32 are slidably connected to the measuring base plate 20 along the second direction. Both the second measuring element 32 and the third measuring element 42 are provided with a second abutment portion. The movement trajectory of the second abutment portion coincides with the center line of the line connecting the two first abutment portions on the orthographic projection of the positioning plate 10. The fourth measuring element 42 is located between the third measuring element 41 and the hinge shaft. When the positioning plate 10 and the measuring base plate 20 rotate around the hinge shaft, one end of the third measuring element 41 is fixed to one of the positioning plate 10 and the measuring base plate 20, and the other end moves relative to the third measuring element 41. Both ends of the fourth measuring element 42 can be fixed to the positioning plate 10 and the measuring base plate 20 respectively, so that the measuring base plate 20 bends and fits against the arc surface of the coronal sulcus.

[0042] It should be noted that the first direction is perpendicular to the second direction.

[0043] The measurement tool provided in this embodiment is used as follows:

[0044] S1. First, measure either the minor axis or the major axis of the ellipse at the coronal sulcus of the patient's penis, and select a suitable positioning plate 10 based on this value. That is, the distance between the two first abutment parts is the length value measured above.

[0045] For ease of representation, in this embodiment, the value of the minor axis is used as the reference for the selected positioning plate 10.

[0046] S2. The measuring tool, which is in the retracted state, is placed on the patient's penis and fixed to the short axis of the coronal sulcus ellipse by two first abutment parts.

[0047] At this time, the penis passes through the first through hole 11 and the second through hole 21 in sequence.

[0048] S3. Fix the positioning plate 10, flip the measuring base plate 20 so that the measuring base plate 20 is aligned with the coronal sulcus slope, and record the flip angle of the measuring base plate 20 relative to the positioning plate 10 through the third measuring element 41.

[0049] S4. Press down on the middle of the measuring base plate 20 so that it bends and fits against the arc surface of the coronal sulcus, and record the bending arc of the measuring base plate 20 through the fourth measuring element 42.

[0050] S5. Control the first measuring element 31 and / or the second measuring element 32 to slide relative to the measuring base plate 20, move along the second direction towards the side where the penis is located, and make the second abutment part abut against the long axis position of the coronal sulcus, record the relative position of the two second abutment parts, that is, obtain the long axis length of the patient's coronal sulcus.

[0051] Specifically, when the measuring tool is worn on the patient, the penis needs to be able to pass through the first through hole 11 and the second through hole 21 at the same time. The distance between the two first abutting parts of the first through hole 11 is predetermined and relatively accurate. Therefore, in order for the penis to pass through the second through hole 21 smoothly, the diameter of the second through hole 21 should not be less than the distance between the two first abutting parts. Therefore, when the positioning plate 10 and the measuring base plate 20 are fastened together, the two first abutting parts can be exposed from the second through hole 21.

[0052] In other embodiments, the long axis length of the patient's coronal sulcus can be measured first, and then its short axis length can be measured by the first measuring element 31 and the second measuring element 32.

[0053] It should be noted that if the first through hole 11 is circular, in order for the penis to pass through smoothly, the length of the long axis needs to be measured first, and then the size of the short axis needs to be measured using the measuring tool provided in this application.

[0054] Optionally, the first measuring element 31 is slidably connected to the measuring base plate 20, and the second measuring element 32 is fixed to the measuring base plate 20. The first measuring element 31 is provided with a marker pointer, and the second measuring element 32 or the measuring base plate 20 is provided with multiple position marks along the second direction. The marker pointer can select one of the position marks. With this configuration, each position mark can represent the distance that the first measuring element 31 moves relative to the second measuring element 32 along the second direction, or represent the distance between the two, thereby obtaining the long axis length at the coronal sulcus of the patient.

[0055] Optionally, the first measuring element 31 has a protruding insert 311 with a marker pointer, and the second measuring element 32 has a slot 321 with multiple position marks along a second direction. The insert 311 and the slot 321 are slidably connected along the second direction. This configuration restricts the movement direction of the insert 311 by the slot 321, making the sliding between the first measuring element 31 and the second measuring element 32 along the second direction more stable. It also ensures that the marker pointer corresponds more accurately to the position marks.

[0056] Optionally, both side walls of the slot 321 are provided with anti-retraction structures. The insert 311 includes a sliding part and a retaining part detachably connected thereto. The retaining part is located at the end of the slot 321 pointing towards the hinge axis. A marker pointer is provided on the retaining part. The sliding part can reciprocate in the slot 321 along the second direction. The anti-retraction structure makes the retaining part only able to move unidirectionally in the slot 321 towards the side closer to the hinge axis along the second direction. With this configuration, when the measuring tool is in the retracted state, the first measuring element 31 and the second measuring element 32 are far apart from each other. When the measuring tool switches from the retracted state to the measuring state, the first measuring element 31 moves towards the second measuring element 32 along the second direction, while the sliding part moves towards the side closer to the hinge axis in the slot 321 along the second direction against the retaining part. After both second abutting parts are in contact with the penis, the sliding of the first measuring element 31 stops, and the anti-retraction structure fixes the retaining part in this position. When it is necessary to withdraw the measuring tool from the patient's penis, it is necessary to release the contact relationship between the second abutting parts and the penis. Therefore, it is necessary to move the first measuring element 31 away from the second measuring element 32 along the second direction. At this time, the sliding part is disconnected from the retaining part, and the sliding part can continue to move away from the second measuring element 32, while the retaining part remains in place. In this way, the relative position of the marker pointer and the position marker is maintained, and the measurement size can still be obtained after the measuring tool is removed.

[0057] Optionally, the first measuring element 31 is connected to a slider 312, and the measuring base plate 20 has a groove 22 along the second direction. The slider 312 extends into the groove 22 and can slide relative to the measuring base plate 20 along the second direction. This arrangement allows the first measuring element 31 to slide more stably relative to the measuring base plate 20 along the second direction.

[0058] Optionally, an arc-shaped support 313 is provided on one side of each of the two adjacent second abutment portions to straighten the penis along the second direction. Since the coronal sulcus of the penis is elliptical, in order to reduce local force stimulation on the penis during measurement, the penis is supported by the arc-shaped support 313, so that its force-bearing area is relatively large, and the penis can also naturally be located at the bottom of the arc-shaped support 313, which plays a straightening role.

[0059] Optionally, both the third measuring element 41 and the fourth measuring element 42 are provided with multiple slots 411 along their length, and each slot 411 can be inserted into one of the positioning plate 10 and the measuring base plate 20. The third measuring element 41 and the fourth measuring element 42 are fixed between the positioning plate 10 and the measuring base plate 20 by snapping them together. Each slot 411 represents a corresponding value, and the corresponding value can be obtained by recording the inserted slot 411.

[0060] Furthermore, according to the cosine and sine laws, the lengths of two sides of the triangle and the included angle between these two sides are needed to calculate the values ​​of other included angles. Therefore, in order to maintain the accuracy of the values ​​and to ensure that the value represented by the slot 411 is constant, the positioning plate 10 is provided with a fixed insertion part. The third measuring piece 41 and the fourth measuring piece 42 are respectively inserted into the corresponding insertion parts to keep the distance between the third measuring piece 41 and the fourth measuring piece 42 and the hinge axis constant. It is also necessary to measure the included angle between the third measuring piece 41 and the positioning plate 10 at this time in order to obtain the included angle between the positioning plate 10 and the measuring base plate 20.

[0061] Optionally, one end of the third measuring element 41 and the fourth measuring element 42 is hinged to the measuring base plate 20, and the slot 411 can be inserted into the measuring base plate 20. This arrangement fixes the distance between the third measuring element 41 and the fourth measuring element 42 and the hinge axis, and simplifies the measurement process for medical personnel.

[0062] Preferably, the third measuring element 41 and the fourth measuring element 42 have a stored state and a supported state relative to the positioning plate 10. When in the stored state, the third measuring element 41 and the fourth measuring element 42 are both attached to the positioning plate 10. When in the supported state, the third measuring element 41 and the fourth measuring element 42 are both perpendicular to the positioning plate 10.

[0063] Specifically, the positioning plate 10 has at least two storage slots. The third measuring element 41 and the fourth measuring element 42 are each located in one of these slots. When in the stored state, the end faces of the third measuring element 41 and the fourth measuring element 42 are flush with the depth-direction end face of the storage slot. When in the supported state, the end faces of the third measuring element 41 and the fourth measuring element 42 abut against one side end face of the storage slot along its length. This arrangement ensures that when the measuring tool is in the stored state, both the third measuring element 41 and the fourth measuring element 42 are embedded in the storage slots, preventing deformation during handling by medical personnel or when the tool is worn by a patient, thus avoiding large numerical errors in the measurement structure. Simultaneously, one side end face of the storage slot along its length provides a limit for the rotation angle of the third measuring element 41 and the fourth measuring element 42.

[0064] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A measuring tool for measuring the coronal sulcus size of the penis, characterized in that, include: A positioning plate (10) is provided with a first through hole (11) in the middle part, and the positioning plate (10) includes two first abutting parts spaced apart along a first direction; The measuring base plate (20) is hinged to the positioning plate (10). The measuring base plate (20) is bendable and deformable and has a second through hole (21) in its middle. When the measuring base plate (20) overlaps with the positioning plate (10), the two first abutting parts are exposed in the second through hole (21). The first measuring element (31) and the second measuring element (32) are spaced apart on the measuring base plate (20) along the second direction, and the first measuring element (31) and / or the second measuring element (32) are slidably connected to the measuring base plate (20) along the second direction. The first measuring element (31) and the second measuring element (32) are both provided with a second abutting part. The movement trajectory of the second abutting part coincides with the center line of the line connecting the two first abutting parts in the orthographic projection of the positioning plate (10). The third measuring element (41) and the fourth measuring element (42) are located between the third measuring element (41) and the hinge shaft. When the positioning plate (10) and the measuring base plate (20) rotate around the hinge shaft, one end of the third measuring element (41) is fixed to one of the positioning plate (10) and the measuring base plate (20), and the other end moves relative to the third measuring element (41). The two ends of the fourth measuring element (42) can be fixed to the positioning plate (10) and the measuring base plate (20) respectively, so that the measuring base plate (20) bends and fits against the arc surface of the coronal sulcus. The first direction is perpendicular to the second direction; By rotating the measuring base plate (20) relative to the positioning plate (10), the rotation angle between the two is measured by the third measuring element (41), that is, the slope of the coronal sulcus. The measuring base plate (20) is bent into an arc surface that can fit with the coronal sulcus by the fourth measuring element (42), so that the data of the coronal sulcus of the patient's penis can be obtained more accurately. The third measuring element (41) and the fourth measuring element (42) are provided with a plurality of slots (411) along the length direction, and each slot (411) can be inserted into one of the positioning plate (10) and the measuring base plate (20); One end of the third measuring element (41) and the fourth measuring element (42) is hinged to the measuring base plate (20), and the slot (411) can be inserted into the measuring base plate (20).

2. The measuring tool according to claim 1, characterized in that, The first measuring element (31) is slidably connected to the measuring base plate (20), the second measuring element (32) is fixed to the measuring base plate (20), the first measuring element (31) is provided with a marker pointer, and the second measuring element (32) or the measuring base plate (20) is provided with a plurality of position marks along the second direction, and the marker pointer can select one of the position marks.

3. The measuring tool according to claim 2, characterized in that, The first measuring element (31) has a protruding insert (311) with a marking pointer. The second measuring element (32) has a slot (321) with multiple position marks along the second direction. The insert (311) and the slot (321) are slidably connected along the second direction.

4. The measuring tool according to claim 3, characterized in that, Both sidewalls of the slot (321) are provided with anti-retraction structures. The insert (311) includes a sliding part and a retaining part detachably connected thereto. The retaining part is located at the end of the slot (321) pointing towards the hinge axis. The marker pointer is provided on the retaining part. The sliding part can reciprocate in the slot (321) along the second direction. The anti-retraction structure makes the retaining part only able to move unidirectionally in the slot (321) towards the side closer to the hinge axis along the second direction.

5. The measuring tool according to claim 2, characterized in that, The first measuring element (31) is connected to a slider (312), and the measuring base plate (20) has a groove (22) along the second direction. The slider (312) extends into the groove (22) and can slide relative to the measuring base plate (20) along the second direction.

6. The measuring tool according to claim 1, characterized in that, An arc support (313) is provided on one side of each of the two second abutment portions to straighten the penis along the second direction.

7. The measuring tool according to claim 1, characterized in that, The third measuring element (41) and the fourth measuring element (42) have a stored state and a supported state relative to the positioning plate (10). When in the stored state, the third measuring element (41) and the fourth measuring element (42) are both attached to the positioning plate (10). When in the supported state, the third measuring element (41) and the fourth measuring element (42) are both perpendicular to the positioning plate (10).

8. The measuring tool according to claim 7, characterized in that, The positioning plate (10) has at least two storage slots. The third measuring element (41) and the fourth measuring element (42) are respectively located in one of the storage slots. When in the storage state, the end faces of the third measuring element (41) and the fourth measuring element (42) are flush with the end face of the storage slot in the depth direction. When in the support state, the end faces of the third measuring element (41) and the fourth measuring element (42) abut against one end face of the storage slot in the length direction.

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