Fowler Digital Protractor Fowler - Sylvac's Deluxe Electronic Protractor, featuring the patented Sylvac measuring system, provides an LCD readout in 1 minute of arc or 0.01°. Features include... Selectable Ranges: 1 x 360° / 2 x 180° / 4 x 90° Patented Sylvac Measuring System 0.01° (1 minute) Resolution Zero anywhere through 360° range Built-in Zero hardpoint for flush surfaces Direct DMS / DD Conversion A variety of bases and blades are available 360° Microfine adjustment 100% Stainless Steel construction Direct RS-232 output - No interface required! A push button selects the measuring range according to application (1 x 360°, 2 x 180° or 4 x 90°) and changes the reading from DMS to decimal degrees. Additional buttons provide for zero setting and print functions. Provided with 8" blade, V-Support and fitted wooden case.