Vernier caliper is a kind of measuring tool used to accurately measure the length, inner and outer diameter, depth and other dimensions of objects, which is widely used in machinery manufacturing, metal processing, maintenance and other fields. Its core feature is that through the cooperation between the main ruler and the cursor (the sliding scale part), the measurement accuracy is higher than that of the ordinary ruler.
primary structure
Main ruler: a ruler with a fixed scale, usually in millimeters.
Cursor: a slidable part sleeved on the main ruler, which is engraved with vernier scale. According to different precision, there are common graduation values such as 0.02mm, 0.05mm and 0.1 mm.
Measuring claw: it includes upper measuring claw (measuring inner diameter) and lower measuring claw (measuring outer diameter/length), and some vernier calipers also have depth ruler (measuring depth).
Brake screw: used to fix the cursor position and facilitate reading.
Measuring principle
Calculate the exact size by the difference between the main ruler scale and the cursor scale. For example, for a vernier caliper with a precision of 0.02mm, the main ruler is 1mm in each cell, and the vernier is 0.98mm in each cell. The difference between them is 0.02mm, and the accurate value below the millimeter can be read through the aligned scale lines.
Audited Supplier 
){kind=link}