名词 calliper:

1. an instrument for measuring the distance between two points (often used in the plural)

动词 calliper:

1. measure the diameter of something with calipers

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callipern.两脚规；测径器；卡钳=caliper.

double bowed callipers弧形腿卡钳

inside callipers内卡钳

beam callipers游标卡尺