Horizontal-reading, digital indicator for use with the H-3220A Benkelman beam. No more laying on the ground to read a dial indicator. We've also redesigned the gauge cover on the beam, so that you can now store the new horizontal digital indicator mounted to the Benkelman beam, speeding set up and keeping the gauge and beam together, eliminating the chance of forgetting the gauge. Horizontal digital Indicator: 1.0" range x 0.001" resolution. Designed for use with the Humboldt H-3220A Benkelman beam. The indicator's 2:1 logic ratio allows it to provide direct readings of benkelman beam results without manual computations. Can be read in inches or metric units.