Cobee New Useful Stainless 180&deg;Steel Round Head Rotary Protractor Angle Finder Rule Measure Gauge Machinist Tool Kit Used to draw radial lines, setting bevels and transferring angles Made of polished stainless steel Double graduation from 0-180 degree; Brass locking nut Material: Stainless Steel. Ruler Size: Approx. 198x14mm Protractor: approx. 52mm Package Included: 1 x angle ruler