Description: This combination square is mainly made of stainless steel and zinc alloy, sturdy and durable. The laser engraving calibration is clearer and easier to read. Multi-functional, detachable and portable, it is a professional engineer measuring tool. Features: Adopting stainless steel ruler and alloy base, the angle ruler is sturdy and durable in use. With clear and accurate calibration which won't fade easily. 0~300mm measuring range, it is adjustable to measure right angle, 45 angle, 45 slope, length, depth and width. The level gauge design helps your measurement preciser. Easy to use, a professional engineer measuring tool. Only the type of black color has the extra center gauge and protractor, more practical and convenient. Specifications: Condition: 100% Brand New Material: Stainless Steel + Zinc Alloy Color: Yellow, Black (Optional) Measuring Range: 0~300mm Overall Size: approx. 30.5*12cm / 12.01*4.72in Weight: approx. 190~386g Package Included: 1 x Combination Square Note: 1. Please allow 0-2cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1Adopting stainless steel ruler and alloy base, the angle ruler is sturdy and durable in use 2With clear and accurate calibration which won't fade easily 30~300mm measuring range, it is adjustable to measure right angle, 45 angle, 45 slope, length, depth and width 4The level gauge design helps your measurement preciser 5Easy to use, a professional engineer measuring tool