Jigsaw Puzzle > 1920s
Jigsaw Puzzle : Marconi rotating beam transmitter at Inchkeith, Firth of Forth, Scotland. This
Jigsaw Puzzles from TopFoto
Marconi rotating beam transmitter at Inchkeith, Firth of Forth, Scotland. This
Marconi rotating beam transmitter at Inchkeith, Firth of Forth, Scotland.
This revolving wirelss beam apparatus projects a horizontal ray of short wireless waves which sweeps round the horizon in about 2 minutes sending out distinctive signals indicating the direction in which the beam is pointing at the moment. A vessel desiring to know its hearing in relation to the lighthouse only requires to note on a short wave received at each revolution of the beam. This indicates absolutely the bearing of the lighthouse because only on that definite bearing can that distinctive signal be transmitted by the apparatus.
Marconi Wireless Co Ltd.
1 January 1925
Media ID 11031153
© TopFoto.co.uk
Jigsaw Puzzle (520 Pieces)
Made in the USA, 520-piece puzzles measure 16" x 20" (40.6 x 50.8 cm). Every puzzle is meticulously printed on glossy photo paper, which has a strong 1.33 mm thickness. Delivered in a black storage cardboard box, these puzzles are both stylish and practical. (Note: puzzles contain small parts and are not suitable for children under 3 years of age.)
Jigsaw Puzzles are an ideal gift for any occasion
Estimated Product Size is 50.8cm x 40.5cm (20" x 15.9")
These are individually made so all sizes are approximate
Artwork printed orientated as per the preview above, with landscape (horizontal) or portrait (vertical) orientation to match the source image.
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