Case for a voltmeter/ammeter circuit case, used for measuring the output of a solar panel or other device. A switch on the back switches the display between voltage and current display. An alternate version using a different circuit can be found at http://www.thingiverse.com/thing:302595
Uses a voltmeter/ammeter circuit and a 5.5mm x 2.1mm or 5.5mm x 2.5mm jack.
The circuit will need to be removed from the plastic case it comes in.
The power input and output pins will need to be bent to fit in the case.
You can use a glue dot to attach the button cover to the button on the circuit board.