Description: 150mm 6 inch LCD Digital Caliper Stainless Electronic Vernier Guage Micrometer. Features: Aluminium alloy head. full body is made of hardened stainless steel. Strong stainless steel frame. Extra Large easy to read digital LCD display. Metric conversion; zero buttons. Measures inside, outside and depth from 0 - 6'(0-150mm). Accurate to 1/1000th of an inch, and 1/100th of a millimeter. Auto switch off for energy saving. User manual is inside the retail box. Measurement types: internal dimension, external dimension, depth and steps. Measurement in both SAE (inch) or Metric (mm) with conversion. Can zero setting in any position. With a small locking thumb screw which locks the jaws in place. Large LCD Display. Automatic turn-off function. Specification: Measure range: 0-150mm / 0 - 6'. Resolution: 0.01mm / 0.0005'. Accuracy: ±0.02mm / 0.001' ( 100 - 200mm), ±0.04mm / 0.0015' ( >200 - 300mm). Repeatability: 0.01mm / 0.0005'. Max. measuring speed: 1.5m / sec, 60' / sec. Measuring system: Linear capacitive measuing system. Battery: 1.55V SR44. Working temperature: 41 - 104°F (5 - 40°C). Relative Humidity: 0% - 80%. Package includes: 1 x 6inch 150mm Stainless Electronic Digital Caliper. 1 x 1.55V SR44 Battery. 1 x English User Manual. 1 x Storage Case