Digital Height Gauge Depth Gauge Large Magnet-based Digital Gauge for Woodworking This mini digital height depth gauge is capable of taking accurate height and depth measurements. Measurement unit conversion, reset in any position, data retention self-supporting The gauge has magnetic feet allowing the depth of cut to be set on the router table. Widely used by woodworkers for measuring woodworking implements. Specifications: Measuring range: 0-80mm Reading value: 0.01mm/0.0005inch Tolerance: 0.2mm Power supply: 3V lithium battery*1 Colour: Black Package includes: 1 x Mini Digital Height Gauge Caution. As the above dimensions are measured by hand, the actual size of the item you receive may vary slightly from the above dimensions. Actual colours may vary slightly from the image colours due to different monitors and lighting effects