n.测径规,卡钳
Ability to use Callipers, Micrometers , Gauges, Profile Projector, Gauge Block.
能使用测径规, 千分尺, 测量仪表,轮廓测定投影器, 块规.
a pair of callipers
一把测径规
And purchases special callipers to survey pinhole.
并且购买特殊的卡尺来测量销孔.