With the Incra Centering Rule you can find the exact center of your work material up to 12" (300mm) wide. This centering rule has top and bottom micro-fine marking holes at every 1/32"" (1mm). This rule also has a built-in protractor with guide slots at every 45°, 30°, 22.5°, and 5° intervals.
All of Incra's rules have precise narrow slots and small holes for use with a .5mm mechanical pencil lead or your fine scratch awl for an exact mark.
