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l9th Wathins & Hill Demonstration Vacuum Pump
A fine mid - l9th Century demonstration vacuum pump, with ivory trade label inscribed WATKINS & HILL 6 CHARING CROSS LONDON, with lacquered brass fittings, the twin central columns enclosing the double rack gear, surmounted by shaped pediment supported on twin tapering columns with globe caps, with rosewood and brass handle, the plate connected to the pump by pipe and valve, with twist vacuum tube and bell jar, 20 in. x 12 in..
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