Protractor/Angle Locator Magnetic Scale Increments 0 to 90 Degrees In 4 Quadrants Lens Diameter 5 7/8 in Number of Level Vials 0 Hi-visibility Orange High Impact Plastic Body with Mounting Holes Ceramic Magnetic Base Metric Rule on 1 Edge English Rule on the Other For Angle Identification With Plumbing Electrical and HVAC Work