Calliper

Part of speech: noun

Pronunciation: /kalˈəpəɹ/

Definitions

1. An essential tool utilized for measuring the space or distance between two points or surfaces, consisting of a calibrated scale and adjustable jaws for precision work
2. A measuring instrument that allows for exact calculations of dimensions, particularly useful in fields like engineering, woodworking, and metalworking
3. A device employed for accurately assessing distances or dimensions between surfaces using adjustable tips and a graduated scale

Etymology: "Calliper" is simply a variant spelling of "caliper," and the two forms share a single history. The word is a variant of "caliber," the term for the diameter of a gun barrel or bullet. Over time, the measuring sense of the word came to describe the instrument used to take such diameters, and its spelling settled in two forms, with "caliper" as the common American choice and "calliper" retained as the British and Commonwealth variant. Because the word began as a measure of bore size, the instrument is named after the very thing it measures: a gauge that reads the width of a barrel, a pipe, or a machined part. The link between a weapon's width and a hand-held measuring tool is what the word preserves.

Synonyms: caliper, measuring tool