Features:Clear scale: this slope measuring ruler has exquisite indicating needles and clear dial which is convenient for users to check.Scale rotating wheel design: a scale rotating wheel is arranged on the slope ruler to adjust the position of the bubble in the leveling tube.Magnetism design: strong magnetism design at the bottom of the slope ruler which can be fixed on the metal for convenient measurement and recording.Fluorescent blister design: the slope ruler has high-density fluorescent blisters which can also help you check clearly at night.Angle comparison table: the comparison table of the back angle and slope of the slope ruler is convenient for you to use and compare.Specifications:Material: Plastic MetalSize:9.84*4.92*0.79inches includes: 1 * MagnetismSlope Measuring InstrumentOR1 * NonmagmatismSlope Measuring Instrument\\