DIYEFI.org Forum

For anyone who has a mill and/or a lathe and absolutely hate figuring out the hand crank scales, here's a bit of help, a digital readout panel

http://www.shumatech.com/products/dro-350/index.htm

I know the scales for these are cap sensors, on a PCB, I've always wanted to make my own PCB and do it with out the china connection. Anyone know of a project that might be a good start for that PCB layout?

Some more about the caps in digitial calipers, see the section where it notes "Digital calipers contain a linear encoder"

http://en.wikipedia.org/wiki/Digital_calipers