On 19 Apr 2005 04:26:53 -0700, "Alan" wrote:

If your drill is burnt out, you will be able to see signs of
overheating on the windings. No need to measure anything.

The best way to test them is by use of a "growler", which detects
shorted turns (or turns shorted to the armature). These are hard to
find, but I did notice one on eBay a few days ago.