The Gold Index DRO is specifically designed for comparator applications. It's advanced capabilities include: dynamic inspection skew function circle measurement (with best fit within 3 to 99 points) line measurement (with best fit within 2 to 99 points) angle measurement (with best fit within 2 lines or 4 points) point memory (up to 200 points) save and recall machine error compensation absolute/incremental inch/mm non-volatile memory made in USA specifications: number of axes 2 units of measurement mm, inch memory non-volatile RAM display high efficiency LEDs display modes diameter/radius power requirement 120 V~, 60 Hz (optional 220 V~, 50 Hz) input signals 5 V TTL compatible quadrature square waves reference systems absolute/incremental resolutions 0.5 µm (0.00002 inch), 1 µm (0.00005 inch), 2 µm (0.0001 inch), 5 µm (0.0002 inch), 10 µm (0.0005 inch) setups via keypad machine error compensation dimensions 337 x 159 mm (13.25 x 6.25 inch)