Precision Measurement Tool : This 2/10/12/17-degree machinist measurement tool is designed for exact angle measurement and alignment. Constructed from precision-ground steel, it ensures reliable performance in all woodworking tasks. Versatile Angle Blocks : The comprehensive set includes multiple angle blocks configured at 30°, 45°, and 60°. Users can creatively stack them for custom angles, making it an essential tool for every machinist. Superior Accuracy : With an accuracy of +/- 20 seconds and a resolution of 0.0001 inches per inch, this degree precision machinist measuring tool delivers meticulous measurements essential for high-quality craftsmanship. Durable Design : Made from hardened steel with a hardness rating of HRC 55, these angle blocks are built for regular use in demanding environments, ensuring longevity and reliability for both DIY and professional applications. Use Scenarios : 1. Ideal for aligning workpieces in cabinet-making projects, ensuring precise joints and seamless finishes. 2. Useful for setting up machinery in a workshop, guaranteeing precise angles for accurate cuts. 3. Perfect for automotive applications, providing precise measurements for frame and component alignments.