From Longman Dictionary of Contemporary Englishcalliperscal‧li‧pers British English, calipers American English /ˈkæləpəz $ -ərz/ noun [plural] 1 TZa tool used for measuring thickness, or the distance between two surfaces, or the diameter (=inside width) of something2 British EnglishMH metal bars that someone wears on their legs to help them walk SYN brace American English
Examples from the Corpus
callipers• When he made it big, in the mid-Seventies, Dury was a 35-year-old former art college lecturer in callipers.• Today he can draw it with callipers. 