How to test sticking caliper?

[James Henderson <jphender@inav.net>]

I have read the recent thread regarding disk-brake calipers
that grab and don't let go.  I have this problem on a non-LBC
and was wondering if anyone has any tips on how to narrow
it down between the hose and line.  How do you test a master
cylinder?  Are there pressure gauges that can go on the bleeders?
Then on the output of the MC?

Thanks!

Jim Henderson
Sprite MKIV