Digital or dial indicator on height gauge

[tonyfoale]

Thank you, your video of making depth measurements, will be handy. I don't know how many times I've had to figure out relative measurements. Doing this, they can be drawn to an absolute coordinate system, with must faster capture time.
Most of the job of making a repair part is measuring the sample. This technique had not occurred to me.

Steve,
The zero setting is the thing that I like most about digital measuring instruments.

I see a cable with 4 wires coming out of the indicator. Did you have any luck with an oscilloscope figuring out how to decode the data and clock?

Yes. Firstly I tried with an analogue CRO but that just didn't show enough detail. So then I tried my Picoscope which is a box between what you are measuring and a PC. In effect a digital scope with the extra processing power of a PC. The Picoscope is a great tool and is much cheaper than a quality standalone scope. With that it was easy enough to interpret the coding. As you know I am waiting for a plug in cable to arrive so that I can easily plug into digital calipers then I can avoid having to solder on a breakout cable.
I'll make a post here when I have sorted out the decoding of my calipers. I'll post the decoding software code here as well.