Feature: 1. Made of stainless steel material, high toughness, wear resistance and can provide long service time. 2. Adopts both metric units and imperial units, laser engraving, scale is accurate, clear and wear resistant. 3. Units switchable design, it can be switched between D and M 4. Aucomatic shutdown function, it will automatic shut off after 3 minutes no operation. 5. Folding design, the ruler body can be folded to save space when it is not used. 6. The sharping end can be storaged inside for safety. 7. 360 degree rotary design, for measuring and marking different angles. 8. Wide applications, suitable for DIY and professional woodworking, creating perfect lines, accurate angles and precise measurement for architect, engineers, draftsmen, carpenters. Specification: This sliding scale is made stainless steel material, high toughness, wear resistance and can provide long service time. 360 degree rotary design, for measuring and marking different angles. Wide applications, suitable for DIY and professional woodworking, creating perfect lines, accurate angles and precise measurement for architect, engineers, draftsmen, carpenters. Features: Made of stainless steel material, high toughness, wear resistance and can provide long service time. Adopts both metric units and imperial units, laser engraving, scale is accurate, clear and wear resistant. Units switchable design, it can be switched between D and M Equipped with data-holds and reset function, convenient for data records. Aucomatic shutdown function, it will automatic shut off after 3 minutes no operation. Folding design, the ruler body can be folded to save space when it is not used. The sharping end can be storaged inside for safety. 360 degree rotary design, for measuring and marking different angles. Wide applications, suitable for DIY and professional woodworking, creating perfect lines, accurate angles and precise measurement for architect, engineers, draftsmen, carpenters. Specifications: Name: Digital Angle Ruler Material: stainless steel+plastics Battery: 1 * CR2032 battery, 3V, 240mAh (included) Folding length: 210mm / 8.27in Expand length: 320mm / 12.60in Handle size: 140 * 27 * 21mm / 5.51 * 1.06 * 0.83in Item weight: 140g / 4.94ounce Package size: 300 * 40 * 40mm / 11.81 * 1.57 * 1.57in Package weight: 250g / 8.82ounce Packing List: 1 * Digital Angle Ruler Package List: 1 * Digital Angle Ruler