Final answer:
A dial bore gauge is not suited to measure length, as it is specifically designed for gauging the internal diameters and roundness of cylinders, as well as taper and wear within a bore.
Step-by-step explanation:
A dial bore gauge is a precision instrument used to measure the inside diameter of holes, cylinders, or pipes. It consists of a calibrated dial indicator and a series of interchangeable anvils to fit the bore being measured. The correct choice between options A) Length, B) Taper, C) Wear, and D) Diameter is A) Length. Dial bore gauges are not suited to measure length as they are specifically designed for gauging the internal diameters and roundness of cylinders. They can also be used to measure taper and wear within a bore but not the overall length of an object.