Found:


Support of a Tangent Sight

anonymous, c. 1860 - c. 1870, demonstration model, NG-MC-1374

Model of a Floating Beacon

anonymous (possibly), 1845, demonstration model, NG-MC-839-1

On display in room 0.13

Model of a Floating Beacon

Rijkswerf Rotterdam (possibly), 1845, demonstration model, NG-MC-839-2

Gun Sight

anonymous, c. 1860 - c. 1870, demonstration model, NG-MC-1889-26

Tangent Sight

anonymous, 1845 - 1865, demonstration model, NG-MC-1889-24-B

Tangent Sight

anonymous, c. 1845 - c. 1858, demonstration model, NG-MC-703

Tangent Sight

anonymous, 1845 - 1865, demonstration model, NG-MC-1889-30

Gun Sight

anonymous, c. 1860 - c. 1870, demonstration model, NG-MC-1889-28