This versatile tool includes the following 5 functions:

Protractor: For measuring and laying out angles
Measuring tool: Can be used as a ruler, (4″/100mm). It has etched graduations in 64ths and in millimetres
Centre finder: For locating centres on shafts and circles
Circle divider: Is used for dividing circles into sectors, polygons and polygrams (up to 9 equal parts)
Drill point gauge: For checking 59 degree angle points