Stainless Steel Digital Ruler Meter Metric Inch Protractor Finder Scale Measuring Tools 0-200/300/500mm 360° 360° measurement: multiple uses Locking structure: Lock at any IP54 for protection level: Waterproof sputtering Large LCD screen Metric and Inch: Clear scale, wearable Product name: Digital display ruler Measuring 0-360° Tolerance: ±0.3° Resolution: 0.05° 0-200/300/500mm (0-7/11/19 INCHES) for Protection level: IP54 Power: CR2032 (included) Color: As Shown Material: Stainless Steel Package Contents: 1 * 0-500mm Digital Angle Ruler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.