"Trident" electric log
- Made:
- 1861-1873 in Birmingham
- maker:
- Thomas Walker
'Trident' electric log (or register) with rubber insulated electrical wires on pivoting stand, by Thomas Walker and Son Ltd., Birmingham, England, 1861-1873
Details
- Category:
- Navigation
- Object Number:
- 1954-32/2
- Materials:
- brass (copper, zinc alloy), enamel, rubber (unidentified), paint and electrical components
- Measurements:
-
overall: 180 mm x 118 mm x 285 mm,
- type:
- navigational instrument and speedometer