Depth Gauge (for Electrical Outlet Spacers, and many other uses)

I designed electrical outlet stand-off spacers for securing outlets to the electrical box while keeping the outlet flush with the exterior wall surface; that model is here: 

https://www.printables.com/model/431861-electrical-outlet-stand-off-spacer

However, when installing and sizing these spacers, it was kind of trial and error to get the correct thickness of spacer(s) to bridge the gap between the exterior wall surface and the front face of the inset electrical box. This depth gauge lets you quickly determine the correct spacer thickness needed.

You just print out the two pieces, insert the plunger into the case (see photos), and the depth gauge is ready to make measurements. There are no physical measurement markings on the gauge, you simply place the arm of the case against the wall face, then push in the plunger until it hits the electrical box face. Then, squeeze on the case and plunger to hold the plunger's position. The plunger will then indicate how much of a gap you need to fill with a spacer or spacers. It is best to make the spacer thickness equal or slightly less than the actual gap – do not use spacers that are wider than the gap, this will cause the outlet to protrude out too far and the face plate will not sit flush against the wall surface.

This depth gauge prints quickly and doesn't use much filament. No supports are needed. Print in the orientation that the downloaded models will be oriented. I suggest that you print at 0.12 layer height, with 100% infill. I used a .4mm nozzle with PLA. I chose to print with two colors, because I think it looks cool. :)