Features: 1. The digital depth gauge is a useful tool for aperture depth measurement in woodworking, metalworking and other applications. 2. It can be measured in metric units (mm) and imperial units (inches), and can be easily read with the LCD . 3. Its measurement range is 80 mm (3.125 inches) with high accuracy ± 0.05 mm (± 0.002 inches) and a resolution of 0.1 mm (0.004 inches). 4. The zero reference point can be set at any point of the ruler to perform the relative measurement procedure. 5. This design uses hard-based features, which are mainly used to set the tool depth on the router and adjust the tailgate. Horizontal and vertical measurements are easier on metal floors. 6. This depth gauge is an essential tool for carpentry, mechanics and home-made. It can be used to set the height of equipment such as routers, flakers, sawing machines, sawing machines, sawing machines, sawing machines, sawing machines, sawing machines, etc. Specification: Measuring range: 80mm / 3.125 inches Resolution: 0.05mm / 0.002 inches Accuracy: 0.10mm / 0.004 inches (<100mm) Repeatability: 0.05mm / 0.002 inches Maximum measuring speed: 1.5 m / s, 60 inches / sec Power: 1x3v CR2032 battery (Not included the the battery) Package included: 1 x Digital Depth Gauge