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
- Measurements:
-
measured through glass: 560 mm x 63 mm x 95 mm,
- Materials:
- brass (copper, zinc alloy) , wood (unidentified) , ivory , rubber (unidentified) and mercury
- Object Number:
- 1867-39/1
- type:
- speedometer
