Simple box for a voltage/current meter. I designed this for the 3dpBurner2 3D printed laser cutter/engraver ( http://www.3dpburner.blogspot.com ), but it can be used for any other project.
Print on STL position without supports. I use it on the 12v main power line. I dont like the idea to use on the laser side due the meter can contain capacitors and could spikes the diode.
It´s ready to be fixed by using M3 stuff, double side tape or hot glue (i use double side foamy tape).
The meter i used comes with thin red and black wires and thick red, black and yellow wires.
See pictures for assembling (on some others the yellow wire comes blue instead).
Take care, usually there are two meter types with similar aspect, one for direct measuring 0-10A (this one) and another for measuring 10-100A where an external shunt is a need (not suitable for 3dpBurner consumption <10A)
There is a similar but temperature meter here: http://www.thingiverse.com/thing:1419583
UPDATED 16/MAR/2016 Added new version "meterVolCur.STL", the recommended one to print.