Definition

Noun: A measuring instrument, specifically a type of caliper, designed to gauge the external dimensions of an object, such as its outer diameter or width. Its defining feature is that its two legs or jaws have points that curve inward to contact the object being measured from the outside.

Usage

The "outside caliper" is used to transfer an external measurement from an object to a ruler or another measuring scale, or to compare the size of one object to another. It is a fundamental tool in machining, metalworking, and woodworking.

Examples

• Noun:
  • The machinist used an outside caliper to check the diameter of the newly turned shaft.
  • For accurate work, an outside caliper must be set carefully against a known standard.
  • He adjusted the legs of the outside caliper until they just touched the opposite sides of the pipe.

Advanced Usage

• "to take a measurement with an outside caliper": The process of using the tool to gauge an external dimension.
  • The first step is to take a measurement with an outside caliper before making any cuts.

Variants and Related Words

• Caliper (Noun): A general device for measuring thickness or distance between two surfaces. An "outside caliper" is a specific type.
• Inside Caliper (Noun): A caliper with legs that curve outward, used for measuring internal dimensions like the diameter of a hole.
• Vernier Caliper (Noun): A more precise measuring instrument that combines internal, external, and depth measurements with a fixed scale.

Synonyms

• External caliper: A less common but descriptive synonym.
• Outside micrometer: A different, more precise instrument for measuring external dimensions, but used for similar purposes in fine engineering.

Related Phrases

• "to set the calipers": To adjust the tool to a specific measurement.
  • After measuring the rod, he set the calipers to that width for future reference.
• "spring-joint outside caliper": A specific type of outside caliper that uses a spring to hold tension on the adjusting screw for finer control.

Noun

1. caliper for measuring outside dimensions; points on its legs curve inward