Model of an Optical Telegraph, Model of an optical telegraph, on a square ground board. A mast has been placed on a pedestal, which is fixed at the corners of the floorboard. The mast has three Ra's, always shorter upwards, with round braided discs at the ends. These can be put in horizontal and vertical position with levers on the base. At the top of the mast a flagpole with Dutch tricolor., anonymous, Netherlands, c. 1830, wood (plant material), brass (alloy), rope, textile materials, h 110.2 cm × w 32.5 cm × d 32 cm.

Model of an Optical Telegraph, Model of an optical telegraph, on a square ground board. A mast has been placed on a pedestal, which is fixed at the corners of the floorboard. The mast has three Ra's, always shorter upwards, with round braided discs at the ends. These can be put in horizontal and vertical position with levers on the base. At the top of the mast a flagpole with Dutch tricolor., anonymous, Netherlands, c. 1830, wood (plant material), brass (alloy), rope, textile materials, h 110.2 cm × w 32.5 cm × d 32 cm

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4046 x 7264 px | 84.1 MB

34.3 x 61.5 cm | 13.5 x 24.2 in (300 dpi)