Single-function digital scale units with SPC output are available in horizontal or vertical designs to measure distances. The scale moves along a beam and displays the distance traveled on a digital display. They measure absolute positioning, zero-setting for relative positioning, and have built-in low battery alarms. They also have direction changeover to reverse the direction of measurement, programmable presets to display a specific value, and data hold. These units do not include data output capability, so they are commonly used for direct reading/immediate measurement applications as well as machine table positioning, quill positioning, and tool presetting. The scale moves along a beam and displays the distance traveled on a digital display. They measure absolute positioning, zero-setting for relative positioning, and have built-in low battery alarms. They are commonly used for table positioning, quill positioning, and tool presetting.

Digital scale quill kits have a digital scale that is mounted vertically to gauge the position of the quill on milling machines. The quill allows the milling cutter to move up and down, and it is this up and down height measurement that the digital scale is set up to measure. These kits have SPC output capability, so they are compatible with data processors and remote displays. They are commonly used in light and heavy manufacturing shops.