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Use "callipers" in a sentence
"Hundreds and hundreds of children, many in callipers or wheelchairs, happy children finding a chance they would never have had."
"His head had been steadied straight up in a most unnatural position, with a kind of callipers or steel braces, and he must have been told to "look up and smile" for a full minute."
"The huge 370mm discs, surrounded by four piston callipers explain why the steering is so precise, you'll think it's laser guided."