The Fowler Mini-MAG Protractor 54-422-450-1 is an electronic protractor with 360deg; digital display of any angle and embedded magnets on the sides and bottom with 5 lb. pull. The display automatically inverts for reading ease. The protractor has a measuring range of 360deg; 4 x 90deg; and a hold feature that freezes the displayed reading while retaining the original zero reference information. The protractor can also be set to read absolute zero, for use as a leveling device. It has a resolution of .05deg; and an accuracy of + or - .2deg;. This product has 1 year offered by Fowler High Precision. If you experience any problem contact Fowler directly for claims. Specifications Measuring range 360deg; 4 x 90deg; Resolution .05deg; Accuracy + or - .2deg; Repeatability .05deg; Power source 9V battery approximately 250 hours of use Dimensions 2.375 x 2.375 x 1.375 inches H x W x D nbsp; H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back. Protractors are tools that measure specific angles, which allow users to create and replicate desired angles. They are useful in a wide range of applications, such as setting angles on grinders, drill presses, bandsaws, table saws and measuring angles of moldings and blades. Fowler, an American company, manufactures inspection and measurement instruments such as electronic indicators, calipers, bore gages, and digital scales. The company, founded in 1946, is headquartered in Newton, MA. Normal 0 false false false EN-US JA X-NONE