When working with dials and of course also with movements it is really important to wear some sort of finger protection. These little finger cots - I use the large size for the thumb and the middle size for the index and middle finger of the left hand - are better then a full rubber glove because one does not sweat that much under them. But still there will be some transpiration which might develop smell. So if you transpired, dump the cots, they come in large quantities at a reasonable price. Not only because of the smell, but mainly because of the dirt that eventually accumulates on the tips. That picture was taken to illustrate the use of those finger cots, as you can see, the hour hand does not yet point skywards...

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