The SCRATCHMARKER 427 scratching tool consists of a basic unit with a carbide scratching tool (diameter of 0.5 mm, tip radius of 0.25 mm), a scale disc for setting the desired scratching depth, a max. scratching depth of approx. 500 μm, scale graduation of 25 μm, and an end-stop ruler. The required levelling plate for depth adjustment is also included with this product. The compact design of the SCRATCHMARKER and the practical end-stop ruler make fatigue-free working possible, even under high workloads.