游标卡尺为常用万能量具之一。本文试就其内外量爪引起的误差进行分析,供使用与检定修理时参考。一、外量爪 1.刀口宽度的影响三用卡尺外量爪,前端制成刀口状,以适应管子壁厚的测量。图1为用刀口量爪测量管子壁厚的情形。 t为测量面刀口宽度,R为管孔半径。由于宽 Vernier caliper is one of the commonly used universal measuring tools. This paper try to analyze the error caused by the amount of claws inside and outside for reference for use and verification of repair. First, the external claw 1. The impact of the width of the knife Three calipers with external claws, front-end made of knife-shaped, in order to adapt to the measurement of pipe wall thickness. Figure 1 shows how to measure the wall thickness of a pipe with a knife-edge claw. t is the width of the measuring surface, R is the radius of the pipe. Because of wide