4results about "Depth gauges" patented technology

A tire tread detection apparatus (100) and tire pressure detector setting apparatus (300) with tire tread detection function are provided. The tire tread detection apparatus (100) includes a body casing (10), a driving unit (20), a measuring member (30), a position member (40), and a sense member (60). The driving unit (20), the measuring member (30), and the positioning member (40) are connected. The driving unit (20) is applied for driving the measuring member (30) to protrude outward from the body casing (10) for measuring the tire tread depth of the tire (200). The sense member (60) generates a measurement signal corresponding to the positioning member (40), such that the measurement signal indicates a tire tread depth value. Therefore, the tire tread depth is efficiently and accurately acquired.

The application discloses a concrete micro-crack measuring device, and belongs to the technical field of building engineering detection. The device comprises a handle, multi-specification conical needles and an electronic vernier caliper. The conical needles are gradually tapered bodies with scales and are suitable for 0.1mm-10mm cracks. The measuring accuracy of the caliper is 0.01mm. During measurement, the matched conical needle is inserted into the crack until the needle is in close contact with the crack, and then the crack width is measured by the caliper, and the depth can be roughly estimated simultaneously. The concrete micro-crack measuring device has the advantages of simple structure, quick operation, accurate measurement, suitability for on-site concrete structure micro-crack detection and long-term monitoring and high practicability.

The utility model discloses a kind of silicon wafer silicon groove depth measuring devices, including base, support platform, dial gauge, support, locking mechanism and probe, support platform is horizontally arranged above base, the lower end of support is fixedly connected with base, support upper end extends to above support platform, the main body of dial gauge is vertically locked in support upper end by locking mechanism, probe includes inner sleeve, outer sleeve, locking piece, claw and probe, inner sleeve coaxially covers in dial gauge lower end, multiple grooves are sequentially arranged in the circumference of inner sleeve, claw is slidably connected in groove, claw inner end clamps dial gauge lower end, claw outer end protrudes from inner sleeve, and be provided with inclined surface, outer sleeve is rotatably connected in inner sleeve outer, and extrude above inclined surface, locking piece locks outer sleeve on inner sleeve, probe is vertically fixedly connected in inner sleeve lower end, the outer diameter of probe lower end is greater than 50 microns and less than 500 microns.The utility model proposes a kind of silicon wafer silicon groove depth measuring devices, the groove depth of narrow small silicon groove can be measured.