Square Rule Gauge Protractor
 It is an engineers protractor, square rule, centre finder, circle divider, drill point gauge
150mm 6" Arm Stainless Steel Construction
Brass locking nut 0-180 degree measure
-  Drill point Gauge - Checks 59 angle drill points
-  Bevel Protractor - Measures and lays out angles
- Center Finder - Locates centers of shafts or circles
- Circle Divider - (up to nine equal parts) is used for dividing circles into sectors, regular polygons and polygrams
- Tap and Drill Table- Correlates popular top sizes with correct drill sizes for national form of thread