Caliper: meaning, definitions and examples

A general term for a device used to measure the distance between two opposite sides of an object. Suitable for general contexts when referring to measurement tools.

• The technician used a caliper to measure the diameter of the pipe.
• Make sure to zero the caliper before taking any measurements.

When used in the plural form 'calipers,' the term also refers to medical devices that are metal supports attached to a person’s legs, used especially for people with disabilities affecting the lower limbs. Thus, in medical jargon, calipers can mean leg braces.

• The doctor suggested using calipers to assist in walking after the surgery.
• She was fitted with a new pair of calipers to help with her mobility.

In automotive contexts, this term is used specifically to describe a part of a disc brake system that houses the brake pads and pistons. The brake caliper squeezes the brake pads against the rotor to slow down or stop the vehicle.

• The mechanic replaced the worn-out brake caliper during the car's brake service.
• A sticky brake caliper can cause uneven braking and wear on the brake pads.