Forside → Emner → Industri, Teknologi & Videnskab → Reguleringer

Reguleringer

Illustrationer

Photo No. 13. (a) For regulating by hand; Photo No. 13. (b) For regulating by hand; Photo No. 13. (c) For regulating by pressing the head against it, inside the helmet; Photo No. 13. (d) For regulating by hand

Submarine Appliances And Their Uses - 1911

Dykkerudstyr Dykkerdragter Reguleringer

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