from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A device used to measure thickness between two surfaces, especially for small or precise measurements.
from the GNU version of the Collaborative International Dictionary of English
- n.pl. An instrument, usually resembling a pair of dividers or compasses with curved legs, for measuring the diameter or thickness of bodies, as of work shaped in a lathe or planer, timber, masts, shot, etc.; or the bore of firearms, tubes, etc.; -- called also caliper compasses, or caliber compasses.
A corruption of caliber. (Wiktionary)