- Measures in metric (mm) and inch units with an easy to read LCD display. - Zero reference point can be set anywhere along the ruler for relative measurements. - Measuring 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). - The digital depth gauge is a practical tool for measuring aperture depth in woodworking, metalworking and other applications. Benefits and practicality - Provides precise depth readings to improve fit and tolerances on aperture related tasks. - Unit flexibility supports common workshop and inspection workflows. - Zeroing anywhere on the scale enables quick relative depth checks without rezeroing the instrument. - High accuracy and fine resolution help reduce rework and measurement errors. Practical use scenarios - Woodworking: verify and set the depth of drilled apertures or pockets before assembly. - Metalworking: check depth of holes and recesses on machined parts to ensure proper clearance and seating. - General use: perform quick depth checks in maintenance, hobby projects, or other tasks requiring precise aperture depths.