Cheap lathe depth gauge

[tumutbound]

This was just posted on a local woodworking/metalworking forum and it's such a neat Idea, I thought I pass it on.
digital lathe depth gauge. 

Lots of suitable tyre tread indicators on eBay.

Pity my lathe and mill are still in storage   
 

[Bernd]

Neat idea. Thanks for passing that on.

Only one problem I can see using it on metal lathe is the small swarf getting stuck to the magents.

Unless of course those are "wood magnets".   

Bernd