[BigHat]

Originally Posted by Vanessa

You guys are funny....

Okay, this is the deal. We use a very specific tool to inspect the gears, jewels and everything else in the watch! It's called .... a loupe!
Seriously, that's all we need. In extreme doubt I might use a jeweler's microscope, that can magnify up to 50X.
Most of the time the great wheel is worn, as well as the third wheel. In some occasions it's the second wheel or very rarely the escape wheel. Or a combination of any of these. The wear is clearly marked by grooves on the pivots, or a "flat" or "mushroom" shape. The balance staff can show the same grooves, and then it is impossible to regulate the watch within standards. The palletfork will in some cases show wear (=grooves) on the pallet stones, and this means the escape wheel teeth are bad as well. On the reversing wheels (the red ones) the wear is first visible on the back side.
Hope this explains it for you!

You need to come around more often,