Insize Combination Square Set You are buying a genuine Insize product from the agent-appointed distributor of all Insize products within Australia. What does this mean for you? All our product warranty is honoured within Australia by Twin Eagle. Each product is shipped with a unique identifier. Feel free to contact us to supply your Insize products. Key Features: Part Number: 2278-3 Center Head (made of cast iron): Locates center of cylinders with diameter (Ød) Range: 30-100mm Accuracy: ±0.15mm Protractor Head (made of cast iron): Sets blade at desired angle to an edge of a workpiece and measures angles Range: 0-180° Accuracy: ±20min Square Head (made of cast iron): Sets blade at 90° or 45° to an edge of a workpiece Accuracy: ±8min for 90°, ±10min for 45° Blade (made of stainless steel): Range: 300mm / 12" Graduation: 0.5mm and 1/32" on front face, 1mm and 1/64" on back face Optional Accessory: Rigid rule (code 7113) Well designed, durable high precision tools that are suitable for various measuring ranges. INSIZE combination squares are the perfect instrument for measuring a wide range of components. Easy to use and adjust combination square set for checking 90° and 45° angles.