Mitutoyo Vernier Depth Gauge Hook Type 0-300mm, 0,02mm, Fine adjustment 527-413This hook type vernier depth gauge offers you the following benefits: The end of the beam is hook shaped so you can take depth and thickness measurements of a projected portion or lip in a hole, as well as standard depth measurements. Its base and measuring faces are hardened and micro lapped for robustness. Fine adjustment models are available. Features Digital Analog: Analog Inch Metric: Metric Depth range: 10. 1 300 mm Hook range: 0 300 mm