Seating the Roller Table

I like to seat the roller table so that the jewel is 90 degrees to the arms of the wheel. I see them seated all over, just any old way. It doesn't make any functional difference, but I think it's neater and it makes it easier to judge the position of the hairspring, to set the beat.

The balance picture has a one-piece double roller. It's part of a grade 542, 10 size Elgin pocketwatch.