Caliper compasses is a tool used in geometry to measure the diameter of round objects. The word "caliper" is pronounced /ˈkæl.ɪ.pər/ and refers to the movable arms of the tool that make direct contact with the object being measured. The term "compasses" is pronounced /ˈkʌm.pəs.əz/ and refers to the tool's ability to draw circles and arcs. The spelling of the word is straightforward, with the use of "c" instead of "s" in the second syllable to indicate the hard "k" sound.
Caliper compasses are a precision measuring tool used in various fields such as engineering, architecture, and metalworking. They consist of two legs or jaws connected by a hinge, with one leg serving as a fixed point and the other leg adjustable to measure distances accurately.
These compasses are typically made of metal, with a scale marked on the adjustable leg for precise measurements. The fixed leg is usually longer and has a curved shape that allows it to move smoothly along a surface while maintaining stability. This configuration ensures accurate and consistent measurements.
Caliper compasses are commonly used to measure the inner and outer dimensions of objects, such as the diameter of a hole, or the width of a groove. They can also be used to measure depths by adjusting the position of the adjustable leg.
To use caliper compasses, the jaws are opened or closed by adjusting the position of the adjustable leg, and the measurement is read from the scale where the jaws meet. The movable leg can be locked in position to prevent accidental changes.
Overall, caliper compasses are an essential tool for precise measurements, allowing individuals to obtain accurate dimensions in a variety of applications. Their versatility and ease of use make them a valuable asset for professionals and hobbyists alike.
The etymology of the word "caliper compasses" can be traced back to two different terms: "caliper" and "compasses".
The term "caliper" originated from the Latin word "calipera", which derives from the Greek word "kálupsis", meaning "a pair of compasses". In Greek, "kálupsis" referred to a carpenter's measuring instrument resembling a pair of compasses, used for taking measurements and tracing outlines.
The term "compasses", on the other hand, originated from the Old French word "compas", which means "a circle, radius, or pair of compasses". This Old French term comes from the Latin word "compassus", which combines "com-" (meaning "together") and "passus" (meaning "a step or pace").