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Square section terrestrial telescope, 1745.

Square section terrestrial telescope, 1745.
3 2 c m
actual image size: 32cm x 24cm


This telescope, with a bras quadrant and a mahogany bracket, was made by William Robertson, who was primarily a microscope maker. It was probably used by Dr Stephen Demainbray (1710-1782), a science lecturer, in his lecture on the construction of telescope.

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