I was looking at a clock that came up for auction last weekend. It was an unusual clock in that it is an Austrian travelling clock, but made in the manner of Thomas Cole's strut clocks. I haven't seen another Austrian clock like this before. The height of the clock is only 11cm, so quite a small clock, and it has a repeating movement, presumably running for one day. Hopefully this link works.. A. W. Mayer in Wien Oval Enamel Dial Table Clock, with gilt metal frame having easel back. Anyway, the thing that struck me about it is how you set the hands - if you zoom in on the picture, you can see that there is a hole cut into the centre of the glass covering the dial, and the hand set square is accessed through this hole! The clock looks to have the original movement, so while this seems like an afterthought on the part of the maker, it must have been part of the design.. But I was wondering if this was at all common?