1Basic Specifications: The multi function digital display ruler series is equipped with a display screen, which can be used for both horizontal and vertical purposes, with high accuracy and a resolution of 0.01mm. 2Optimized Design: The moving grid module displacement sensor adopts optimized design, has strong anti interference ability, no over speed error occurs, and the response speed is 3 meters/s. 3Hole Installation: Digital display ruler with installation hole design, back installation hole, suitable for use with various equipment and machine tools. 4Strong Magnetic Force: The back of the display screen of the digital display ruler has strong magnetic force, which can be adsorbed on iron objects. 5Measurement at Any Position: The external digital display ruler can be used for fixed measurement at any position, which is very convenient to use. Item Type: Digital Readout Linear Material: Stainless Steel + Aluminum Alloy Uses: Industrial Battery: 3V CR2032 x 2 Button Battery (without Battery) Scale Unit: Metric Scale, Imperial Scale ABS Key: Relative Measurement Absolute Measurement Conversion SET Key: In the inch measurement state, each time you press this key, the resolution of the fractional part will switch between 1/3, 1/64, and 1/128 Mm In Key: Metric Inch Conversion at Any Position ON OFF Key: Power Switch Key ZERO Button: Reset Button at Any Position Response Speed Of Moving Grid Sensor: 3 Meters/S 1 x Digital Display Ruler 1 x Base 3 x Bracket 2 x Screw 1 x User Manual