Shaft Lead Measurement - A New Technique

A highly magnified picture of the surface of a shaft can be generated by running the profile signal from a stylus scanner into an X-Y recorder. Successive traces across a surface area can then be put together much the same as is the picture from a scanning electron microscope. Thus, a permanent record is made in which not only the lead of a shaft is identifiable, but also the surface condition including pits, flaws, burrs, and cracks.