• Inch Metric ESD Safe Anti-Static Dial-Max Calipers
• Conductive/Dissipative for work on sensitive electronics
• Inch .001" Resolution to 6" Length, Metric .1mm to 150mm
• Non Metallic, Anti Magnetic, Non Corroding, Non Marring
• Bi-directional Thumb Roller with Friction stop

Does inside and outside depth and step measurements. Bezel rotation allows for quick realignment to zero. The caliper is super light weight for all day non fatigue handling.