SMIDDO - "The Electrician's Speed Square"

The SMIDDO is designed to encompass all the guides needed to accurately and efficiently make short work of your next project.  You will be able to quickly mark where the knock-out holes needed to be able to create perfectly aligned conduit runs out of an electrical box.  Using the SMIDDO "3 Step Layout" process you can truly measure once and cut once!  You can also determine the wire gages, motor shaft and key sizes, even measure existing knock-out holes... all with one tool.  The SMIDDO!

The SMIDDO has taken the guess work out of laying out where to punch your next knock-out hole.  It even comes with a special mark whether you are using 7/8" or 1-5/8" unitstruts to mount your conduit runs.  Check out the SMIDDO "3 Step Layout" process page to learn how this amazing tool will save you time and make you look like a true professional. Watch the "Easy Layout" video...

Wire Gage

We all have had a wire with the print worn off or unreadable... just use the wire gage on the SMIDDO to verify the proper size.  The SMIDDO can check wire gages from #14 to 500MCM.

Motor Shaft and Key Size Gage

The SMIDDO can be used to gage motor shaft sizes from 1/4" to 1-3/8"...  the handy gage can even be used with pulleys and guards still in place.  The corresponding key size is marked next to each shaft size and can also be used to gage the key slot.

Knock-out Hole Size Gage

If you have an existing knock-out and want to verify the conduit size that corresponds with the hole...  simply insert the layout tool in the knock-out and read the conduit size on the SMIDDO.

7 tools in one!

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Read what other electricians have to say about the SMIDDO.