Halls Rotary
- A departure from the reciprocating designs.
- From a prototype displayed at the R.A.S exhibition 1868
- This model is approximately 2" to 1'
- Designed by David Piddington
- Length: 10 1/4"
- Height: 5 1/2"
- Width: 4 1/2"
- Flywheel dia: 4 1/2"
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