I put in a digital voltmeter, But the body size was a little too big (thick) so it got hashed, and I screwed the face plate.
I later found a smaller, and thinner Volt meter for under $9.
I found it here:
http://www.marcmart.com/goods-2788-...tage+meter+-+DC+32-30V+Red+-+Panel+Meter.html
Its specs are:
Dimention: 24mmx21mmx11mm
Color: Red
measuring range: DC 3.2-30V (No Need Power)
Display: 3, 1/2" digital display
Sample period:500ms
Resolution:1%+1digit
Another company has similar small meters under $5 here:
http://www.suntekstore.com/goods.php?id=14002343&utm_source=gbus
Its specs are:
Display Type: 0.36" LED digital tube, 3 digit
Power Supply: DC6-30V
Refresh Rate: about 300mS / times
Range: 0-100V
Input Polarity: DC voltage
Overload Capacity: 4 times range
Input Impedance: 100Kohm
Accuracy: 0.1% (?1 digit)
LED Size: 22.5 mm?14mm
Board size: 26?17mm
Operating Temperature: -40 ℃ -85 ℃
LED Color: Red
I chose the more expensive one cause its just a two wire, simple, hook-up (and I found this one first
otherwise I probably would have went with the $4 one :bang head
As soon as my new face plate shows up, It will get installed and I'll post the pictures or a video.
The first pic is what it will look like, with the exception the digital readout will be a little bit smaller (I did the photo mock-up when I bought the bigger meter). The second is of the voltmeter itself, I hooked up to a battery and put it next to a scale for reference, third is just a close-up.
Here is the old Voltmeter, The paperclips are 7/8" (the length of the new meters display) so you can see the unit was too big. It was about 3/4" thick (new meter is only 3/8" thick). I thought I could make it fit, but nope.