APR Multi-Use Ruler made of long-wearing stainless steel.
This gauge is used for five distinct functions:
Drill Point gauge is used for checking 59-degree angle drill points.
Bevel Protractor is used for measuring and laying out angles.
Center finder locates centers of shafts or circles.
Circle divider(up to nine equal parts)is used for dividing a circle into sectors, regular polygon a Polygram.
Tap and drill table shows popular tap sizes with correct drill sizes for the National form of a thread.
The rule has permanently Etched graduation of 4” size in 64 THS of an inch at bottom Edge & Millimeters at top Edge.
Available Size: 4″