Sheng test high precision portable DT-838 digital display universal Multimeter

Digital vernier caliper
Vernier caliper is a measuring tool used to measure length, inner and outer diameters, and depth. A vernier caliper consists of a main ruler and a vernier attached to the main ruler that can slide. The main ruler is generally measured in millimeters, while the vernier caliper has 10, 20, or 50 divisions. Depending on the division, the vernier caliper can be divided into ten degree vernier caliper, twenty degree vernier caliper, fifty degree vernier caliper, etc. The vernier caliper with 10 divisions is 9mm, the one with 20 divisions is 19mm, and the one with 50 divisions is 49mm. The main ruler and vernier caliper have two sets of movable measuring claws, namely the inner measuring claw and the outer measuring claw. The inner measuring claw is usually used to measure the inner diameter, while the outer measuring claw is usually used to measure the length and outer diameter.