Precision machining: The angle block set is precisionmachined to ensure accuracy and reliability in your measurements, with a tolerance of / 20 seconds, so angles stay exact every time. Versatile angles: Includes both 306090 and 454590 angle plates, providing a wide range of angle options for various applications. Solid construction: Crafted from durable materials, the set offers exceptional durability and stability. The solid construction enables secure positioning and prevents unwanted movement during use. Practical machinist tool: Designed with machinists in mind, this angle block set is an essential tool for professionals and DIY enthusiasts alike. It helps streamline machining processes by ensuring precise angle setups, saving time and effort. Practical applications Milling and drilling setups: Use as a reference to align workpieces at precise angles for fixtures, jigs, and repeatable cuts on milling or drilling machines. Angle checks and transfers: Verify angles against drawings and transfer them to setups or fixtures to ensure consistency across parts. Jig and fixture fabrication: Build custom fixtures that require accurate, repeatable angles for batch production or repeat work.