Callipers are a measuring tool with two arms that close on an object to read its thickness. A pair of callipers, vernier callipers, measure it with callipers.
The arms grip the object and a scale reads off the gap between them, which is far more exact than a ruler laid alongside. The word also names the metal supports fitted to a weak leg, and the parts of a disc brake that squeeze the disc.
1nouncallipersA tool with two arms that measures thickness exactly.
“The machinist checked the shaft with a pair of callipers.”
callipers is a tool.
Also accepted in games: calipers
calipers A corruption of caliber.
Etymology from Wiktionary, CC BY-SA
Practised in Tools & DIY