Mahr Federal’s Optimar 25 long-range indicator calibrator is said to be accurate to ±10 microinches (±0.3 microns) with a full 0-to-1" (25 mm) range. The calibrator uses a precise digital encoder to measure directly in line with the instrument and is said to avoid backlash. It is designed for use with measuring instruments including dial and digital indicators, comparators and test indicators; electric probes and gage heads; air probes and jet probes; and other devices that magnify the linear displacement of a contact point or measuring spindle. The benchtop calibrator supports inspection to the most commonly used standards worldwide, the company says.
The calibrator is equipped with a MarCheck display, a MarTest mounting shaft and adapter bushing, and a MarCheck angle display stand. The large MarCheck LCD monochrome digital display features background illumination and 13-mm-high (0.512"-high) digits for readability. The calibrator also can be equipped with QMSoft’s QM-Dial software to support the inspection of dial gages. Other available options include a universal centering support, dovetail mounting shaft, foot switch for data transfer and RS-232 null modem cable.