Features: The measurement accuracy error is only 0.5mm/m, and the water bubble are clear, bright, and free of impurities. They are exquisite, compact, and easy to operate. More accurate measurement, double lines green light with large bubble. Strong magnetic adsorption design with strong side magnets that can adsorb on iron surfaces. Clear digital scale, measuring while measuring is more practical, and measuring while labeling is flat, with multiple uses for one foot. Small size makes more convenient to carry and easy storage. Specifications: Material:Aluminum Alloy Accuracy: 0.5mm/m (0.0005″/”) Type:105mm/4.13'',155mm/6.1'',200mm/7.87'' Package Includes: 1x Magnetic Spirits Level note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.