ATOM DX™ 20 μm pitch, rotary, cabled readhead (20 nm resolution, 3 m cable, 15-way D-type (standard pin-out) termination, 6 MHz clocked output, and 3-state alarm) for use with RCDM20 optical diameter ≥ 31.4 mm to < 42.4 mm | Renishaw Online Store