Variable Height Diameter Radius Gage Diameters, radii and lengths (from known "bump stops") can be measured using this long gaging range, electronic indicator assembly. It is capable of locking into position at specific heights and moved up or down as needed. Calibra tion Gage with Pneuma tic Adjustment This gage is used to check the equipment that detects the level of a chemical in two tanks. It does not do the actual measuring, but verifies the validity/compliance of the detectors. Gage (right) shown on top of master (below and left) Special Gaging 263 S pecial G aging