Features: High Precision: +/- 20 Seconds, 0.0001" per inches. Each angle block has 4 holes for easy installation. Made of precision ground solid hardened steel, the angle blocks can offer precision measurement and long term use. Including 1× 30-60-90 Degree angle block, 1×45-45-90 Degree angle block and one fitted for case, easy to carry. The angle blocks can be used for calibrating and measuring the exact angle. Specifications: Material: Steel Measuring range: 30-45-60-90° Package Includes: 2x Angle Block Set 1x for Case note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.
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