Ennwell-Triola
This is an Ennwell-Triola signal flashlight from 1935. Made in the Ennwell factory, which was started at 1895 in Nuremberg. Morse function, 40 mm lens, and two coloured, red-green filters - this is what the Triola name implies. The Triola is a musical term, a group of three notes to be performed in the time of two ordinary notes of the same kind.
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