What is the function of a telescoping gauge?

A telescoping gauge is a specialized tool primarily used for measuring the inside dimensions of holes or cylinders. It works by using a pair of arms that can be expanded or contracted to fit within the target area. Once the gauge is properly adjusted, it can transfer its measurements to a micrometer for precise reading. This function allows for accurate internal measurements, which are essential in various mechanical and engineering applications.

This functionality distinguishes it from options like measuring external surfaces or fluid levels, which are not the intended applications of a telescoping gauge. Similarly, it does not serve to indicate engine RPM, which is a measurement pertaining specifically to engine performance. Understanding the specific use of tools like telescoping gauges is key for effective application in small engine technology and engineering practices.