I just repaired this Schatz miniature 400 day clock. It has a handle on top, and the glass dome has a hole in top that fits over the handle, and presses down on the brass washer to keep out dust (I don’t have the dome here to photograph, as the customer kept it to avoid breakage).
Repair job 7741. I polished the pivots, and installed a new 0.0024 inch thick suspension spring.
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