The Many Uses for the 3D Ruler:

Using the 3D to set
marks on aluminum
before bending
Using the small 3D to set a
3/16” rip on circular saw
Quickly and easily gauging
setback of aluminum trim
coil stock on folding brake
before bending

Close up of large 3D
determining shim size to
make door opening plumb
Using large 3D and 6 foot
level to determine shim
size to plumb rough opening

Using the 3D ruler with power tools:


  • Calibrating rip fence- Use this method if you are A) unsure of the accuracy of your fence cursor, or B), you have changed sawblades and the new blade is a different thickness.
  • Place the 3D between the tablesaw fence and the blade, with the base of the 3d on the fence and the step contacting the blade. ( picture) You can use any step, but it is simplest to use the largest step, 1 1 /2”. Make sure there is gentle contact between blade, ruler and fence as you tighten the fence clamp. Now you can adjust your fence cursor to exactly 1 ½”, and it will be accurate for all readings.
  • If you are in a rush, you can simply use whatever step you need to set up a quick and accurate rip. Use one or both of the 3D rulers stacked together to get the desired dimension.
  • Setting table saw blade height- to ensure accurate blade height, the best tool to use is the 3d ruler. Select the height you want from the two rulers- you can choose from 1/16” up to 2 ½” in increments of 1/16” by either using the rulers separately or stacking them together. Place the ruler next to the blade at the highest part of the blade, I.e. the top of the curve, and make sure a saw tooth is at that point. Carefully ( saw teeth are sharp!)  feel between the ruler and the blade and adjust the blade until the two are exactly flush with each other.
  • Checking dados- use the 3D as a gap gauge to set up a dado blade or inspect dados for the proper width and depth. You can micro-adjust the fit by using pieces of paper between the 3D ruler and the side of the dado as needed.


  • Set bit height in 1/16” increments by placing either 3d ruler next to the bit and adjusting the height until it feels flush. Micro-adjust fit by using paper if needed
  • Set distance to fence by using ruler between bit and fence
  • Check fence offset between infeed side and outfeed side- extend one 3D ruler across the two sides and measure the offset with the other ruler
  • Check depth of cut in your workpiece
  • If your router has multiple depth stops use the 3D ruler to set those stops if you need to take multiple passes to complete a deep cut.


  • Set drill bit stop height by placing 3D ruler under drill bit and setting depth stop
  • Measure distance from drill bit edge or drill center to stop or fence
  • Step off 1” or ½” increments in workpieces to drill multiple holes


    • Set top guide to proper height above workpiece
    • Set fence to blade distance


  • Check dado depth setting ( pic)
  • Measure off blade to make temporary marks on fence for repetitive cuts ( Pic)


  • Use large or small 3D ruler to scribe lines in 1/2” increments ( Picture)
  • Use notches in ruler to step off even spaces across material ( Pic )
  • Use ruler like a regular ruler!             


  • Use the level/3D combination to set and/or inspect drain line pitch!
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