Specification: Material: Stainless steel, Aluminum alloy. Color: White. Measurement Accuracy: 0.01. Size: Angle seat thickness: 15mm/0.59inch. Ruler size: 30.5 x 0.2cm/12 x 0.08inch(L x Thickness). Regular/Upgrade Ruler weight: 135g/03lb; 313g/0.69lb. Special Features: Fade Resistant, Soil stain resistant, Rust resistant. Display Type: Digital. Batteries Included: No. Power Mode: Manual. Type: Regular/Upgrade Combination Square. Features: 1. Selected stainless steel ruler body: The ruler body is forged with selected stainless steel materials, which has wear resistance and rust resistance, and is beau if ul and durable as a whole. 2. Multiple measurement methods: Double sided double-metic steel rule, measured at three angles. 3. Regular Combined movable angle: Double-sd ed double-metric steel ruler, which can measure the internal and external right angle s of 90°, 45°Bevel measurement, and 180°horizontal measurement. 4. Upgrade Combination Square: Double-sided male-Engish steel Ruler, which can measure the internaland external right angles of 90°, 45° angle slope measurement, circular center positioning, The proac or can measure any angle from 0° to 180°. 5. Impact- resistant large blister design: can be used as level gauge to bring more convenience to work. Warm reminder: There are certain errors in pure manual measurement. Package included: 1 x Combination Square Ruler