Caliper

A caliper is a precision measuring instrument used to measure the distance between two points. It typically consists of two legs joined by a hinge or slide, allowing for adjustable opening and closing. Calipers can be used to measure external dimensions (like the diameter of a cylinder), internal dimensions (like the bore of a hole), or depths. They are crucial tools in various fields, including engineering, manufacturing, machining, and even medical and scientific research where accurate measurements are paramount. Different types of calipers exist, including those that directly read measurements from a graduated scale, dial calipers with a needle indicator, and digital calipers with an electronic display, offering varying degrees of precision and ease of use. Accurate calibration is vital for reliable results. They work through the principle of physical contact, creating a measurement from a difference of distance, rather than a measurement of a ray from a given point.

Caliper meaning with examples

• The machinist carefully used the digital caliper to measure the outer diameter of the metal rod before turning it on the lathe. The precise measurements ensured that the final product would meet the required specifications, guaranteeing the part's proper fit with other components.
• During the quality control inspection, the technician employed a dial caliper to assess the inner diameter of a machined cylinder. This accurate measurement helped confirm that the part was within the specified tolerances, thus assuring the functionality of the machinery.
• The engineer utilized a vernier caliper to verify the depth of a drilled hole in the printed circuit board, determining that the depth was exactly what was written on the design. This precise verification prevented potential short circuits that could cause system failure.
• The watchmaker used a pair of spring calipers to measure the width of the watch case, ensuring that the new replacement glass fit snug. The accuracy was crucial for the aesthetic appearance and proper sealing of the delicate timepiece to prevent damage.
• In a forensic science laboratory, the investigators used specialized calipers to measure the length and width of small bone fragments, used as evidence in the case. These measurements are critical data in identifying the potential origin of the victim.