BAILEIGH INDUSTRIAL Radius Gauge & Angle Gauge RG750 2.5inch to 30inch Range, ±0.005inch Accuracy Set 1pc

Variable-arc radius gauges measure large inside and/or outside arcs or curves using a flexible three-point contact style gauge that bends to fit the arc being measured. When all three contact points make contact with the curve, a lock nut is activated to fix the measurement in place. Measurements are taken with the standard and/or metric graduations on the body of the gauge. When locked into place, these gauges also mark or apply the curve dimensions to another piece making them effective transfer tools. They are commonly used for industrial fabrication, jobsite measurement and inspection, and in construction.