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-78

Model of a Disengaging Gear for…

Petrus van der Loo, 1841, demonstration model, NG-MC-542

Model of a Time Signal

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

Model of a Chain Pump

Petrus van der Loo, 1855, demonstration model, NG-MC-649

Model of the Capital of a…

Petrus van der Loo, 1834, builder's model, NG-MC-831

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