Found:


Model of a Main Topgallant Mast

anonymous, c. 1850, demonstration model, NG-MC-157

Model of a Made Mast

anonymous, 1819, demonstration model, NG-MC-138-2

Model of Part of a Made Topmast

anonymous, 1821, demonstration model, NG-MC-158

Model of a Ladder

Petrus van der Loo, c. 1850, demonstration model, NG-MC-78

Model of a Heating Furnace

Rijkswerf Rotterdam (possibly), c. 1820 - c. 1850, demonstration model, NG-MC-53

Gunlock (Percussion)

anonymous, 1830 - 1834, percussion lock, NG-MC-713

Model of Diagonal Framing

anonymous, anonymous, c. 1822, instruction model, NG-MC-115-A

Sounding Lead

John Ericsson, c. 1836 - c. 1860, sounding lead, NG-MC-1018

Model of the Head of the Masting…

Rijkswerf Rotterdam, c. 1818, demonstration model, NG-MC-38

Model of an Anchor

anonymous, 1819, demonstration model, NG-MC-613