[DURABILITY ALUMINUM ALLOY]: Crafted from aluminum alloy with oxidation treatment, anti-deformation. [PRECISE MEASUREMENTS]: Engraved inch and metric scales for clear and accurate readings, for marking tasks. [CONVENIENT DESIGN]: Features a large center hole for easy finger placement to secure the ruler on workpieces, preventing slippage. [EASY TO USE]: Glossy exterior for effortless placement and movement, safeguarding delicate cutting edges from damage. [VERSATILE TOOL]: With a 15mm thickness, ideal for measuring height and angles, making it a must-have for woodworking projects., Manufacturer: MRKU