From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Request to test a 12-volt No.109 Wind Horn submitted by Klaxon Limited.
| Identifier | ExFiles\Box 59\3\ Scan064 | |
| Date | 22th July 1930 | |
| Hs.{Lord Ernest Hives - Chair} X6074 ROY{Sir Henry Royce}/GEA6/EB.22.7.30. We send you herewith, one 12-volt No.109 Wind Horn, submitted for test by Messrs. Klaxon Limited. Would you kindly test this instrument and let us have your report thereon, in due course. ROY.{Sir Henry Royce} [Signature] | ||