Berthon's speed indicator for ships comprising of calibrated mercury monometer with engraved ivory plates

Made:
1849-1851 in England
maker:
Edward Lyon Berthon

Berthon's speed indicator for ships comprising of calibrated mercury monometer with engraved ivory plates, rubber tubing, and brass components displayed in cutaway sections of wood ship, by Edward Lyon Berthon, England, 1849-1851

Details

Category:
Navigation
Object Number:
1867-39
type:
speedometer
credit:
E L Berthon

Parts

Berthon's speed indicator for ships comprising of calibrated mercury monometer with engraved ivory plates

Berthon's speed indicator for ships comprising of calibrated mercury monometer with engraved ivory plates

Berthon's speed indicator for ships comprising of calibrated mercury monometer with engraved ivory plates, rubber tubing, and brass components displayed in cutaway sections of wood ship, by Edward Lyon Berthon, England, 1849-1851

Materials:
brass (copper, zinc alloy) , wood (unidentified) , ivory , rubber (unidentified) and mercury
Object Number:
1867-39/1
type:
speedometer
Two brass pressure gauges, for Berthon's speed indicator

Two brass pressure gauges, for Berthon's speed indicator

Two brass pressure gauges connecting the calibrated monometer to pilot head, by Edward Lyon Berthon, England, 1849-1851

Materials:
brass (copper, zinc alloy) and steel (metal)
Object Number:
1867-39/2
type:
speedometer

Related Objects

Coast Navigator

Ebony and brass octant.

Octant made of ebony and brass

Magnetic compass and sundial by Henry Sutton

Military map from First Gulf War, 1990-1995

'MicroDAGR' GPS receiver, 2012