• Head Type: Rectangular
• Blade Length (Inch): 6
• Maximum Measurement (Degrees): 180
• Measures angles from 0-180º in opposite directions thus permitting reading an angle directly and also its supplement • Used for drawing radial lines, transferring angles and setting bevels • Head measures 3-5/16" x 2" • Features 6" arm and knurled thumb lock nut • Blade secured firmly by lock nut at any angle