150MM Plastic Measuring Vernier Calipers

Vernier caliper is a measuring tool for measuring length, internal and external diameter and depth. The vernier caliper is composed of a main ruler and a vernier that can slide on the main ruler. The main scale is generally in mm, while there are 10, 20 or 50 divisions on the vernier. According to the division, the vernier caliper can be divided into 10 division vernier caliper, 20 division vernier caliper, 50 division vernier caliper, etc. the vernier with 10 division is 9mm, 20 division is 19mm, and 50 division is 49mm. There are two pairs of movable measuring claws on the main ruler and the vernier of the vernier caliper, namely, the inner measuring claw and the outer measuring claw. The inner measuring claw is usually used to measure the inner diameter, and the outer measuring claw is usually used to measure the length and outer diameter.

Vernier caliper is a commonly used instrument for measuring length in industry. It consists of a ruler body and a vernier that can slide on the ruler body. When viewed from the back, the cursor is a whole. There is a spring piece between the vernier and the ruler body, and the spring force of the spring piece is used to make the vernier and the ruler body close. There is a fastening screw on the upper part of the vernier, which can fix the vernier at any position on the ruler. Both the ruler body and the vernier have measuring claws. The inner measuring claws can be used to measure the width of the groove and the inner diameter of the pipe, and the outer measuring claws can be used to measure the thickness of the parts and the outer diameter of the pipe. The depth ruler and vernier ruler are connected together to measure the depth of groove and barrel.