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: 2278-2 Center Head: Locates the center of cylinders with diameters ranging from 1.181" to 3.937". Accuracy: ±0.006" Protractor Head: Sets the blade at the desired angle to an edge of a workpiece and can measure angles. Range: 0-180° Accuracy: ±7min Square Head: Sets the blade at 90° or 45° to an edge of a workpiece. Accuracy: ±8min for 90°, ±10min for 45° Blade: Range: 300mm / 12" Graduation: 0.5mm and 1/32" on the front face, 1mm and 1/64" on the 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.