Versatile measuring tool, 4 tools in one  Anglefinder, Compound Cut Calculator, Protractor, Level
Anglefinder  Determines the exact angles of jobsite or workpiece, eliminating guesswork
Compound Cut Calculator Automatically determines the exact miter and bevel setings necessary to make each crown molding cut fit precisely.
Protractor precisely positions the workpiece or intended cut line at the desired angle
Level Built-in vertical and horizontal spirit levels, accurate to 0 +/- 0.05°
Hold Function To freeze measurements
Digital readout displays on front and back For easier use
Optional Leg Extension For accurately measuring hard-to-reach angles
Rugged construction for durability 

Model Number DAF220K

Length 17″
Weight (lbs.) 2.6
Vial Accuracy +/- 0.05°
Electronic Accuracy +/- 0.1
Readout Accuracy +/-0.1°
Measuring Range 0° to 220°
Engineering Number 0601096639
Battery Life 100 Hours
Leg Length 16″
Power 4 AA 1.5V Batteries
Used on Model No. All Miter Saws

Includes:

Hard Case and Extension Leg