Gauge for Priming Tubes, Mold for testing the penetration of impact pipes. It consists of a bell-shaped solid copper body, through which an iron tube goes from top to bottom, a pin is provided in this tube, on which the whipping pipe is placed. An equally bell-shaped lid with a ribbed edge on top is screwed over the whole, the internal shape of this fits precisely around the edge of the whistle. The mold is equipped with a copper whisk., Marine Stoomvaartdienst (mentioned on object), Netherlands, 1860, brass (alloy), iron (metal), copper (metal), h 7.5 cm × d 5.7 cm
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