Telescoping Gage

Telescoping gauges are measuring tools used by craftsmen to measure the internal diameter of holes or bores. They consist of two telescoping arms, one with a measuring head and the other with a handle. The measuring head can be adjusted by sliding it along the arm and then locked in place using a locking screw.

To use a telescoping gauge, the craftsman first adjusts the measuring head to a slightly smaller diameter than the hole being measured. The gauge is then inserted into the hole, and the handle is rotated to expand the measuring head until it makes contact with the walls of the hole. The craftsman can then read the measurement from the scale on the handle or use a separate measuring tool to determine the diameter.

Telescoping gauges are commonly used in industries such as machining, automotive, and aerospace, where precise measurements of internal bores are required. They are versatile tools that can be used to measure a wide range of hole sizes, and they provide accurate and reliable measurements.