Gauge Block material and durability: precision alloy steel core is surface hardened to HRC5862 and nickel plated for added durability, delivering reliable performance and longlasting use. Precise angular measurement: angular precision of 10 minutes on a readable nonius; allows microadjustable angles from 0° to 60° for accurate and repeatable measurements. Versatile applications: suitable for use with milling machines, planers, drill presses, and adjustable angle grinders. Use for regulating the blade, creating slopes, slanthole drilling, and more. Can be used to clamp workpieces during processing. craftsmanship: each working face is ground to 0.01 mm parallelism and verticality, ensuring accuracy and dependable results in every operation. Practical use scenarios: 1) Set and verify exact blade angles on a milling machine or planer to achieve precise inclined cuts. 2) Establish slopes and perform slanthole drilling on a drill press or adjustable angle grinder with consistent accuracy. 3) Clamp and align workpieces during processing by pairing with other fixtures for stable, repeatable setups.