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Occupation Interests / What is This Optical Instrument ?
« on: Friday 10 April 20 03:19 BST (UK) »
Looks like the disk can be rotated slowly by turning the handle.
And that whatever is on the disk can be viewed through the eyepiece ?
What is it The picture was taken somewhere around 1900-1910 I think
And that whatever is on the disk can be viewed through the eyepiece ?
What is it The picture was taken somewhere around 1900-1910 I think