1. The caliper, micrometer, highly ruler, Angle scale the scribed line etc. 2. Electronics industry to postpone feet device engraving 3. High-precision military products mark Technical parameters: Working table stroke: 1100mm, Scribed line width: 0.05-0.20 mm, arbitrary scribed line width poor less than 0.01 mm Scanning scope: 70mm * * 70mm, 100mm 100mm Scribed line quality: amplification 50 times observation, scribed line have blackness, no wires, no noticeable flash, degree of finish is smooth, no ripple.