Definition

Noun: A measuring instrument, specifically a type of caliper, designed to measure the internal dimensions of an object, such as the diameter of a hole or the width of a cavity. Its defining feature is that its two legs have points that curve outward, allowing them to contact the interior surfaces.

Usage

An inside caliper is used by machinists, engineers, and woodworkers to gauge internal sizes where a ruler cannot reach. The measurement is taken by adjusting the legs until they just touch the opposite interior walls, then transferring that distance to a ruler or micrometer for a precise reading.

Examples

• Noun:
  • The machinist used an inside caliper to check the bore of the cylinder before assembly.
  • For an accurate measurement of the pipe's inner diameter, an inside caliper is the correct tool.

Advanced Usage

• "to set an inside caliper": to adjust the tool to a known reference size before taking a measurement.
  • He set the inside caliper against a gauge block to ensure its accuracy.

Variants and Related Words

• Caliper (noun): A general term for a device used to measure the distance between two opposite sides of an object. An inside caliper is a specific type.
• Outside caliper (noun): A similar tool with inward-curving legs, used for measuring external dimensions like the outside diameter of a rod.

Synonyms

• Internal caliper
• Hole gauge (in specific contexts)

Related Phrases

• "Take an inside measurement": The action of using an inside caliper or similar tool.
  • You need to take an inside measurement of the housing to select the right bearing.

Noun

1. caliper for measuring inside dimensions (the size of a cavity or hole); points on its legs curve outward