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Brass hand crank model of John Ericsson's three bladed duplex screw propellor
- inventor:
- John Ericsson
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Brass hand crank model, scale 1:12, of John Ericsson's duplex screw propellor (1836-1837), with brass plaque, unsigned, Europe, 1856
Details
- Category:
- Marine Engines
- Object Number:
- 1891-140
- Materials:
- brass (copper, zinc alloy), steel (metal) and perspex
- Measurements:
-
with perspex mount: 155 mm x 150 mm x 100 mm, .475kg
base: 178 mm x 178 mm
- type:
- model - representation
- credit:
- Bullivant and Co.