An 18th-Century vacuum pump, signed PYEFINCH LONDON with single rack action, the gear enclosed within a mahogany bridge raised on twin tapering supports from the mahogany base on 4 brass ogee feet, the base 14½ins. (36.8cm.) long; with a companion set of 6 bell jars, the tallest 18¼ins. (46.4cm.) high. See illustration (2)
An 18th-Century vacuum pump, signed PYEFINCH LONDON with single rack action, the gear enclosed within a mahogany bridge raised on twin tapering supports from the mahogany base on 4 brass ogee feet, the base 14½ins. (36.8cm.) long; with a companion set of 6 bell jars, the tallest 18¼ins. (46.4cm.) high. See illustration (2)
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