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Model of a Floating Beacon
Rijkswerf Rotterdam (possibly), 1845, demonstration model, NG-MC-839-2
Tangent Sight
anonymous, 1845 - 1865, demonstration model, NG-MC-1889-30
Tangent Sight
anonymous, c. 1845 - c. 1858, demonstration model, NG-MC-703
Model of a Floating Beacon
Rijkswerf Rotterdam (possibly), 1845, demonstration model, NG-MC-840
On display in room 0.13
Gun Sight
anonymous, c. 1860 - c. 1870, demonstration model, NG-MC-1889-27-1
On display in room 0.13
Gauge for Priming Tubes
Marine Stoomvaartdienst, 1860, test model, NG-MC-1082
Support of a Tangent Sight
anonymous, c. 1860 - c. 1870, demonstration model, NG-MC-1374
Tangent Sight
anonymous, 1845 - 1865, demonstration model, NG-MC-1889-24-A
Gun Sight
anonymous, c. 1860 - c. 1870, demonstration model, NG-MC-1889-28