Features: Length: 5.13" Packaging: Hanger Card Accurate to 1/2 of 1 degree Makes it easy to find and transfer angles Magnetic base for mounting on steel framing square or pipe Ideal for contractor, plumber, electricians, home owners, etc. Measure angle accurately and quickly from 0-90 degrees in any quadrant Simply place angle finder vertically on any surface for instant, accurate reading Use conversion chart to determine pitch per inch and pitch per foot (included on back of hanger card) Strong ceramic magnetic base attaches to a carpenter's steel square to overcome time-consuming computation of angles Non-magnetic squares or straight edges may be attached with #6 self-threading screws |