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4-Inch Heliograph Mirror SUR0030

4-Inch Heliograph

A heliograph uses a mirror to reflect sunlight to a distant observer. By moving the mirror, flashes of light can be used to send Morse code.

This approved 4-Inch Heliograph is a very useful item to have available should other signalling devices fail you.

Part No: SUR0030

4-Inch Heliograph Mirror SUR0030
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