calliper (also caliper)

n 1 [C usu pl 通常作复数] metal support for weak or injured legs 双脚规形夹（因腿部无力或损伤而使用的金属支架）. 2 callipers [pl] instrument for measuring the diameter of tubes or round objects 测径器; 双脚规; 卡钳: a pair of callipers 一把测径器. =>illus 见插图.

call on/upon, call on/upon sb (to do sth), call sb down, call sb out, call sb/sth off, call sb/sth up, call sth, call sth forth, call the roll, call up, call-box, call-girl, call-in, call-up, call...to account, caller, calligrapher, calligraphy, calling, calling-card, callisthenics (also calisthenics), callosity, callous, calloused, callously, callousness, callow, callowness, callus, calm, calm down, calmly, calmness, Calor gas, calorie, calories, calorific, calorimeter, calory, calumniate,