"Gunner Asch" wrote in message
...
On Thu, 6 Apr 2017 13:34:05 +0000 (UTC), unk wrote:

I would like to be able to tell by colour if a screw has turned -
does
that exist?

Low-strength/removeable...

Maybe a kind of varnish?

Fingernail polish works nicely as both a thread locker that will
allow
the screw to be removed easily without extra effort, and it will
show
if the screw has been removed or moved.

Works better than "locktite" for gun applications. And you can get
it
cheap from the missus or the discount store.

Have a good story ready for why you need it. I've found it in all the
electrical coding colors, some of which would be really weird on
fingernails.
-jsw