Found:


Model of Foundations with…

Petrus van der Loo, 1855, demonstration model, NG-MC-49

Model of a Ladder

Petrus van der Loo, c. 1850, demonstration model, NG-MC-77

Model of a Light Beacon

Enthoven & Co. (attributed to), c. 1866, demonstration model, NG-MC-1194

Model Indicating the Headroom of…

Petrus van der Loo, c. 1860, demonstration model, NG-MC-1030

Model of a Pile Driver

Petrus van der Loo, 1855, demonstration model, NG-MC-48

Model of a Ladder

Petrus van der Loo, c. 1850, demonstration model, NG-MC-81

Model of a Rudder

Petrus van der Loo, Petrus van der Loo, 1855, demonstration model, NG-MC-225

Model of a Ladder

Petrus van der Loo, c. 1850, demonstration model, NG-MC-76

Model of a Ladder

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

Model of a Time Signal

Petrus van der Loo, 1849, demonstration model, NG-MC-826