Quote Originally Posted by luke11cnc View Post
if you made the touch probe centre part with Acrylic to replace the black you could add a coloured LED and that would give you a visual indicator and look quite cool what do you think ??
A single LED in the side of the cylinder would be simpler. The best way, in my opinion, would be to make it out of aluminium and have a ring of acrylic half way up so that when the LED (which is concealed inside) light it's makes the whole ring glow ... and anodise it then chamfer to get colour contrast for good measure :)

Having said that this is a tool, not a iPhone. Doing all that would make it too expensive for John S.

http://www.renishawdirect.com/en/styli/A50007804.aspx