Touching on

[Gasgasbones]

Hi all

When I set up datums on my machine I have to touch on a known hight with the tool.
Its a little difficult to get my head in the machine and have a good look as I touch on with the tool. I have a boxfod and its in a case so space is tight to look around, i try using a jewellers loupe to look but Invariably I usually muck it up a bit an either set it to high or too low. Only by a smidgen mind but its enough to wind me up as im usually doing quit shallow engraving.

Id like to tighten up my machining and get as good as I can with setting up etc.

I see some tools that light up when touching on or make a sound but I want to bypass the electronics in my machine completely and use some kind of stand alone device.

So, whats out there fellas ?

I cant see how I can make a simple circuit either as the whole machine is metal ?!!

Cheers guys

Carl