Professions, diving, diving ball, bathysphere, recovery operations
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"Taucherkugel zu Bergungszwecken"
(diving ball (bathysphere) for recovery operations)
10 x 11.5 cm (3.9 x 4.5")
"Taucherkugel zu Bergungszweck. Vertikal- und Horizontalschnitt")
(diving ball (bathysphere) for recovery operations with a vertical and horizontal view)
10 x 14.5 cm (3.9 x 5.7")
Wood engravings on 2 separate pages of text (in German) about the construction
and use in diving and recovery operations. Published 1897.
