I recently acquired acquired an Alpa Roto and it seems mostly to work fine. There are a couple things about the camera I can't work out though - for example I can't work out how to preselect an angle of rotation. The angle preselctor (labeled '9' in the image) on my camera doesn't move at all, and I'm unsure whether it'd be wise to try to force it.
Does anyone have experience using this camera? Thanks!

Does anyone have experience using this camera? Thanks!


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