Model of an Optical Telegraph, anonymous, c. 1798 - c. 1800 demonstration model Model of an optical telegraph on ground board. It consists of a mast with a ra. With hoists over blocks on the RA, two VLERKEN are moved halfway through the mast and two buoys are hoisted up and down at each end of the RA. Netherlands wood (plant material). brass (alloy). rope

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Size: 4504px × 5696px
Photo credit: © piemags/rmn / Alamy / Afripics
License: Licensed
Model Released: No

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