Model of an Optical Telegraph, Model of an optical (light) telegraph on a wooden base, in very poor condition. A wooden projector board is hung on top of a mast with seventeen sawn-out geometric figures in two rows. The same figures are drawn below on a paperboard-operated control board. The cut-out figures above are covered with lead valves, which can be lifted with strings through the corresponding figures below, so that the figure lets light through. Thirty-six combinations of figures are indicated on the paper below. Four service signals have been explained in Dutch. A label with the number 3 is attached to the base., anonymous, Netherlands, c. 1795 - c. 1800, wood (plant material), iron (metal), rope, paper, model: h 33.5 cm × w 28.8 cm × d 12.1 cm packaging capsule: h 40.5 cm × w 32.5 cm × d 15.5 cm
Keywords:
Model, Optical Telegraph, optical, light, telegraph, wooden base, poor condition, wooden projector board, hung, top, mast, seventeen sawn-out geometric figures, two rows, figures, drawn, paperboard-operated control board, cut-out figures, covered, lead valves, lifted, strings, corresponding figures, figure lets light, Thirty-six combinations, indicated, paper, Four service signals, explained, Dutch, label, number 3, attached, base, Netherlands, c, 1795, 1800, wood, plant material, iron, metal, rope, model
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