Found:


Log Timer

Rasmus Dekker, c. 1795 - c. 1812

Polarising Filter

John Benjamin Dancer, c. 1880

Vacuum Gauge

Eugène Bourdon, c. 1860

Meetlat uit het wrak van de…

anonymous, 1700 - in or before 1743

Artificial Horizon

anonymous, anonymous, anonymous, c. 1830 - c. 1865

Measuring Rod

anonymous, anonymous, 1750 - 1825

Het Amsterdams peil

anonymous, c. 1400 - c. 1950

Metronome

Johann Nepomuk Maelzel, c. 1880 - c. 1900