The ruler is made of aluminium alloy, it has good corrosion resistance and is not easy to wear. Three spirit bubbles in different directions have high measurement accuracy. The spirit level ruler is built-in with a strong magnet, which can be adsorbed on iron products for easy measurement.​ The ruler is made of thicker material. It is not easy to bend and deform. The measurement is more accurate. High precision, the product is suitable for measuring the field of construction.​, Weight: 0.220462262 Pounds, Manufacturer: Acouto