How to Make a Surface Plate Into a Gage

Surface plates provide a large, flat reference surface that can be extremely useful for inspecting incoming, in-process or finished parts. The surface plate is often referred to as the foundation of measurement since it provides the reference for much of the layout...

The Right Gage for Measuring Small Bores

Over the years, this column has examined using air gaging and back pressure to measure small bores (under 1 mm/0.040 inch). Air gaging can be an acceptable way of measuring small bores, but it does not provide any form information; it only provides the flow area as...