Which device is used specifically for measuring the size of tapers in machining?

A Taper Ring Gage is specifically designed to measure the size of tapers in machining. This specialized tool ensures that the taper fits within the specified limits, allowing for precision in applications where a taper is necessary, such as in the fitting of tooling, shaft connections, or drilling operations. The unique design of the taper gage allows it to accurately assess the angle and dimensions of the tapered surface, ensuring proper functionality in various machining processes.

While other tools like telescope gages, micrometers, and calipers have versatile applications for measuring various dimensions, they lack the specific design features necessary for accurately measuring tapers. Telescope gages are more suited for internal measurement of holes, micrometers can measure outside diameters or thickness, and calipers provide a general means of measuring a variety of dimensions but do not specialize in taper measurements, making the taper ring gage the appropriate choice for this task.