ATOM DX™ 20 μm pitch, rotary, cabled readhead (0.5 μm resolution, 1.5 m cable, 15-way D-type (standard pin-out) termination, 4 MHz clocked output, and 3-state alarm) for use with RCDM20 optical diameter ≥ 26.1 mm to < 31.4 mm | Renishaw Online Store