Combination Set The Combination Set is a versatile precision measuring and marking instrument designed for angle measurement, squareness checking, center finding, layout work, and inspection applications. Widely used in machine shops, tool rooms, fabrication workshops, engineering industries, and quality control departments, it combines multiple measuring functions into a single tool. The set consists of a stainless steel rule and three interchangeable measuring heads: a square head, center head, and protractor head. These hardened measuring heads allow accurate measurement, marking, alignment, and setup on a wide variety of workpieces. Features • Multi-Purpose Measuring and Layout Tool • Three Interchangeable Measuring Heads • Stainless Steel Rule (Blade) • Hardened Measuring Heads for Long Service Life • Suitable for Angle Measurement and Marking • Precision Center Finding on Round Components • Accurate Squareness and Alignment Checking • Ideal for Engineering and Inspection Applications Components Included • Square Head • Center Head • Protractor Head Functions Square Head • Sets Rule at 90° and 45° • Checks Squareness and Alignment • Layout and Marking Applications Center Head • Locates Centers of Round Workpieces • Suitable for Shaft and Pipe Inspection Protractor Head • Measures Angles • Sets Rule to Desired Angles • Precision Layout and Inspection Work Technical Specifications Model: 501-300 Rule Length: 300 mm Graduation: 5 Minutes (0° – 90° – 0°) Accuracy: • Center Head: ±0.15 mm • Protractor Head: ±7 Minutes • Square Head (45°): ±10 Minutes • Square Head (90°): ±8 Minutes --- Model: 501-600 Rule Length: 600 mm Graduation: 5 Minutes (0° – 90° – 0°) Accuracy: • Center Head: ±0.15 mm • Protractor Head: ±7 Minutes • Square Head (45°): ±10 Minutes • Square Head (90°): ±8 Minutes Applications • Angle Measurement • Center Finding • Squareness Checking • Layout and Marking • Machine Shop Inspection • Tool Room Applications • Fabrication Work • Engineering Measurement • Quality Control Inspection • Manufacturing Industry Product Video: Paste YouTube Video Link Here For more information about the Combination Set, please contact us at 08045134493 or email [vhk_08@yahoo.com](mailto:vhk_08@yahoo.com). Our team will be happy to assist you with product specifications, pricing, and application support.