Profile: WM.L.Riggs Co., Inc. is a supplier of precision measurement tools. Our products include flange spreaders, dial gauge stands, instant gauging fixtures, thread gauges, torque wrenches and multi-test calibration systems. Our flange spreader separates flanges for the replacement of the flange gasket or the re-application sealant to the flange face. It is attached to the flange mounting holes, and spreads the flange faces without damaging the flange sealing surfaces. Our multi-test calibration system is used for testing & calibrating torque wrenches, torque screwdrivers, torque multipliers, cable tensiometers, tension & compression gauges, and non-impact power tools such as electric screwdrivers. Our precision tools are for measuring blind hole depths, concentricities, lengths, diameters, and shoulder lengths.