Measuring scale for contrasting and measuring instar of tachypleus tridentatus and width of carapace of tachypleus tridentatus

Abstract

The utility model discloses a measuring scale used for contrasting and measuring the widths of tachypleus tridentatus ages and the width of a carapace, relates to the technical field of tools for measuring the tachypleus tridentatus ages, and solves the problem that an existing graduated scale is poor in effect of measuring the widths of the tachypleus tridentatus ages and the width of the carapace. According to the technical scheme, the ruler comprises a ruler body, a fixed claw arranged at the lower end of the ruler body and a moving claw, the fixed claw is arranged at the front end of the ruler body and is aligned with the side edge of the ruler body, and the moving claw slides back and forth relative to the ruler body; the front surface of the ruler body is a contrast area, a first scale for marking the age of the horseshoe crabs and a second scale for marking the width of the carapace of the horseshoe crabs are arranged on the contrast area of the ruler body, and a plurality of contrast grooves are formed in the contrast area of the ruler body. The tachypleus tridentatus age is obtained through comparison, the tachypleus tridentatus age can be directly obtained without looking up data after the tachypleus tridentatus width is measured, the tachypleus tridentatus age measuring device has the advantages of being convenient to carry and operate, meanwhile, the tachypleus tridentatus cannot be damaged, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tools for measuring the age of horseshoe crabs, in particular to a measuring ruler used for comparing and measuring the age of horseshoe crabs and the width of the cephalothorax. Background Art

[0002] Currently, the ruler cannot simply and directly measure the age of horseshoe crabs. After measuring the width of the cephalothorax of horseshoe crabs with the existing ruler, it is necessary to consult literature to confirm the age of horseshoe crabs. Utility Model Content

[0003] In view of the existing technical problems, the purpose of the utility model is to provide a measuring ruler for comparing and measuring the age of horseshoe crabs and the width of the cephalothorax to solve the above problems. The age of the horseshoe crab can be obtained by comparison. After measuring the width of the cephalothorax of the horseshoe crab, the age of the horseshoe crab can be directly obtained without consulting any data. It has the advantages of being easy to carry and easy to operate, and at the same time will not harm the horseshoe crab, thereby improving work efficiency.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A measuring ruler for comparatively measuring the age and cephalothorax width of horseshoe crabs comprises a ruler body, a fixed claw arranged at the lower end of the ruler body, and a movable claw, wherein the fixed claw is arranged at the front end of the ruler body and is aligned with the side of the ruler body, and the movable claw slides back and forth relative to the ruler body; the front side of the ruler body is a comparison area, and the ruler body is provided with a first scale marking the age of the horseshoe crab and a second scale corresponding to the width of the cephalothorax of the horseshoe crab in the comparison area, the first scale is arranged on the side of the ruler body in the vertical direction, and the second scale is arranged on the bottom edge of the ruler body in the horizontal direction; a plurality of comparison grooves are provided on the ruler body in the comparison area.

[0006] Preferably, a third scale is provided in the comparison area of ​​the ruler body corresponding to the first scale and the second scale respectively.

[0007] Preferably, a horseshoe crab control model adapted to the control groove is provided in the control groove.

[0008] Preferably, a stainless steel bottom plate is provided at the bottom of the control groove, and a magnet sheet is provided at the bottom of the horseshoe crab control model.

[0009] Preferably, the control grooves are configured to correspond to horseshoe crab patterns of different ages.

[0010] Preferably, the length of the first scale is 6 cm, and the first scale is equally divided into 14 scales.

[0011] Preferably, the length of the second scale is 20 cm, and the second scale is equally divided into 20 scales.

[0012] In summary, the utility model has the following beneficial effects:

[0013] The ruler body is marked with horseshoe crab age scales and cephalothorax width, the fixed claw and the movable claw of the cephalothorax external measuring claw are connected to the ruler body, the cephalothorax width of the horseshoe crab is measured by adjusting the movable claw, and then the age of the horseshoe crab is obtained by comparison. After measuring the cephalothorax width of the horseshoe crab, the age of the horseshoe crab can be directly obtained without consulting data, the invention is easy to carry, easy to operate, and will not harm the horseshoe crab, thereby improving work efficiency.

[0014] In addition, a horseshoe crab reference model is provided on the ruler. The horseshoe crab reference model can be detachably mounted on the ruler through magnetic attraction. The horseshoe crab reference model is engraved in a one-to-one comparison with horseshoe crabs of different ages. When using it, the staff can obtain the age range of the horseshoe crab by comparing the model, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the measuring ruler of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the measuring ruler body of the utility model.

[0017] Figure numerals: 1. ruler body; 2. fixed claw; 3. movable claw; 4. control area; 5. first scale; 6. second scale; 7. control groove; 8. third scale; 9. horseshoe crab control model. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] See also Figure 1-Figure 2 A typical embodiment of the present application provides a measuring ruler for comparing and measuring the age of horseshoe crabs and the width of the cephalothorax, comprising a ruler body 1, a fixed claw 2 and a movable claw 3 arranged at the lower end of the ruler body 1, the ruler body 1 being a rectangular steel plate structure, the front of the ruler body 1 being a control area 4, the ruler body 1 being provided with a first scale 5 marking the age of the horseshoe crab and a second scale 6 corresponding to the width of the cephalothorax of the horseshoe crab in the control area 4, the first scale 5 being arranged on the side of the ruler body 1 in the vertical direction, and the second scale 6 being arranged on the bottom of the ruler body 1 in the horizontal direction, wherein, in the present embodiment, the length of the first scale 5 is 6 cm, and the first scale 5 is equally divided into 14 scales. The length of the second scale 6 is 15 cm, and the second scale 6 is equally divided into 15 scales. In other embodiments, scale ranges of different proportions can be set according to actual use.

[0020] The ruler body 1 is provided with a plurality of control grooves 7 in the control area 4. The control grooves 7 are correspondingly arranged to horseshoe crab figures of different ages, so as to facilitate the control during measurement.

[0021] The fixed claw 2 is a long strip structure, and one side of the fixed claw 2 along its long side is horizontally arranged. One end of the fixed claw 2 is provided with an arc structure to form a tip, which is fixedly arranged at the front end of the ruler body 1 and aligned with the side of the ruler body 1, and the tip of the fixed claw 2 is arranged downward. The movable claw 3 is arranged at the bottom end of the ruler body 1 and is arranged in close contact with the bottom edge of the ruler body 1. A wire groove is provided at the top of the movable claw 3, and the wire groove is adapted to the bottom end of the ruler body 1, so that the movable claw 3 slides back and forth relative to the ruler body 1. A tip extending downward is provided on the side of the movable claw 3 close to the fixed claw 2, and the tips of the fixed claw 2 and the movable claw 3 are both used to clamp the object to be measured.

[0022] In a preferred embodiment, a third scale 8 is provided in the comparison area 4 of the ruler body 1 corresponding to the first scale 5 and the second scale 6 respectively, and the scale value of the third scale 8 is the coordinate point of the first scale 5 and the second scale 6, such as 1-3.

[0023] In a preferred embodiment, a horseshoe crab reference model 9 adapted to the reference groove 7 is provided in the reference groove 7, a stainless steel bottom plate is provided at the bottom of the reference groove 7, and a magnet sheet is provided at the bottom of the horseshoe crab reference model 9. The horseshoe crab reference model 9 is detachably connected to the reference groove 7 by magnetic attraction. The horseshoe crab reference model 9 is engraved in accordance with a one-to-one comparison of horseshoe crabs of different ages, and the staff can quickly obtain the age range of the horseshoe crab by comparing the model when using it, which is convenient for use.

[0024] On the whole, the ruler body 1 is marked with horseshoe crab age scales and cephalothorax width, and the fixed claw 2 and the movable claw 3 of the cephalothorax external measuring claw are connected to the ruler body 1. The cephalothorax width of the horseshoe crab is measured by adjusting the movable claw 3, and then the age of the horseshoe crab is obtained by comparison. After measuring the cephalothorax width of the horseshoe crab, the age of the horseshoe crab can be directly obtained without consulting any data, and the method is easy to carry and easy to operate. At the same time, it will not harm the horseshoe crab, thereby improving work efficiency.

[0025] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A measuring ruler for comparing and measuring the age of horseshoe crabs and the width of the cephalothorax, characterized in that: The invention comprises a ruler body, a fixed claw arranged at the lower end of the ruler body and a movable claw, wherein the fixed claw is arranged at the front end of the ruler body and is aligned with the side of the ruler body, and the movable claw slides back and forth relative to the ruler body; the front side of the ruler body is a control area, and the ruler body is provided with a first scale marking the age of the horseshoe crab and a second scale corresponding to the width of the cephalothorax of the horseshoe crab in the control area, the first scale is arranged on the side of the ruler body in the vertical direction, and the second scale is arranged on the bottom edge of the ruler body in the horizontal direction; a plurality of control grooves are provided on the ruler body in the control area.

2. A measuring ruler for comparing and measuring the age of horseshoe crabs and the width of the cephalothorax according to claim 1, characterized in that: A third scale is provided in the comparison area of ​​the ruler body corresponding to the first scale and the second scale respectively.

3. A measuring ruler for comparing and measuring the age of horseshoe crabs and the width of the cephalothorax according to claim 2, characterized in that: A horseshoe crab control model adapted to the control groove is arranged in the control groove.

4. A measuring ruler for comparing and measuring the age of horseshoe crabs and the width of the cephalothorax according to claim 3, characterized in that: A stainless steel bottom plate is provided at the bottom of the control groove, and a magnet sheet is provided at the bottom of the horseshoe crab control model.

5. The measuring ruler for comparing and measuring the age of horseshoe crabs and the width of the cephalothorax according to claim 3, characterized in that: The control grooves are correspondingly arranged with horseshoe crab figures of different ages.

6. A measuring ruler for comparing and measuring the age of horseshoe crabs and the width of the cephalothorax according to claim 1, characterized in that: The length of the first scale is 6 cm, and the first scale is equally divided into 14 scales.

7. The measuring ruler for comparing and measuring the age of horseshoe crabs and the width of the cephalothorax according to claim 1, characterized in that: The length of the second scale is 20 cm, and the second scale is equally divided into 20 scales.

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