ALUMINUM ALLOY: Made of high quality aluminum alloy, the high precision level ruler is to use and has a long lifetime. LARGE SIZE BUBBLE: 180° HD large size bubble can measure up and down, which can meet your daily needs. NIGHT USE: With unique design, you also can use the silver magnetic level ruler in the dark night. HIGH PRECISION: High precision measuring, the measurement accuracy of the magnetic level ruler can be 0.1mm. COATED The is coated, which means that the bubble spirit level will not be easily damaged., Manufacturer: Hilitand