Protractor/Angle Locator Magnetic Scale Increments 0 to 90 Degrees In 5 Quadrants Base Length (In.) 4 5/8 in Overall Height (In.) 5 1/8 in Lens Diameter 3-15/16 in Bule High Impact Plastic Body w/Mounting Holes Ceramic Magnetic Base Metric Rule on 1 Edge English Rule on the Other For Angle Identification With Plumbing Electrical and HVAC Work