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Vacuum Gauge
Eugène Bourdon, c. 1860, measuring instrument, NG-MC-1062
Polarising Filter
John Benjamin Dancer, c. 1880, measuring instrument, NG-MC-1409
Metronome
Christiaan Welmeer, 1803, musical instrument, BK-NM-8936
Salinometer
A.P. How, 1850 - 1865, measuring instrument, NG-MC-1060
Log Timer
Rasmus Dekker, c. 1795 - c. 1812, measuring instrument, NG-MC-885