A twin bladed aluminium Marconi-Newton type 182S constant speed windmill dated 1926.

MARCONI-NEWTON CONSTANT SPEED WINDMILL PAT. No 262558/1926

3500 R.P.M. 85/300 M.P.H TYPE 182S No 27582/23

Length: 46 cm.

Diameter of hub: 6 cm.

For a similiar Marconi-Newton constant speed windmill see the online catalogue of the Marconi Collection at the Museum of History of Science, Oxford. Inventory Number: 54960