Fowler Digital Quill Kit A vertical digital scale designed specifically to display the Z-axis movement of machine tools. Can be mounted on most surfaces enabling precise linear movement. Floating zero and preset functions allow "zero" set anywhere along the travel of the digital readout. Fits most knee mills, drill presses and other machine tools with easy installation.Features include... 0 - 6" / 150mm travel Accuracy: ± 0.001" / 0.03mm Resolution: 0.0005" / 0.01mm / 1/64" Preset, zero, in/mm, absolute/incremental, on/off functions Stainless steel construction Interchangeable mounting brackets with hardware IP54 protected against fluid and dust Large display 9.5mm Uses 1 CR2032, 3V battery (2 included) Includes quill installation tool kit