Wrist-worn GPS navigation 1920s style

The 1920s-era GPS is among the items on show at the British Library Business and Intellectual Property Centre

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A 1920s-era wrist-mounted display that allowed the sophisticated gentleman to peruse his planned route; a 1930s “electro massager” rewarded the user with a “zappy ending” in the form of electrical shocks; and a pair of glasses equipped with two battery-powered lights alternately provided its wearer with illumination and set their head on fire. Outlandish contraption expert Maurice Collins is exhibiting these, and 50 similar items, at the British Library Business and Intellectual Property Centre.

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