Pivot Point Instruments

I manufacture Arc Master Radius Gauges. The IRG ***0 measures the radius of an arc from the Inside while the ORG ***0 measures arcs from the Outside. These gauges have a measuring range from 6"(**0mm) to **4"(***0mm) in Metric and Imperial. They require *2" to *3" of arc to obtain a measurement. An attachment for the IRG ***0 & ORG ***0 is the Variable Arc. This unique tool, when mounted on the radius gauges, is designed to form the actual arc the radius gauge is set to. I also manufacture a set of smaller radius gauges. The IRG **0 and the ORG **0. These measure arc from 2.5"(*4mm) to *0"(**0mm) from the inside and outside respectively. They require only 5"(**8mm) of arc to obtain a measurement.