What Is a Radius Gauge?

R gauge, also called R template, radius gauge. The R gauge is a tool for measuring the radius of an arc using the light gap method. When measuring, the measuring surface of the R gauge must be completely in close contact with the arc of the workpiece. When there is no gap between the measuring surface and the arc of the workpiece, the arc radius of the workpiece is indicated by the R gauge at this time digital. Because it is visual inspection, the accuracy is not very high, only qualitative measurement can be made. There are five measuring points on each gauge.