Rolls-Royce Archives
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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).
Comparison of Lucas & Bosch buzzer type horns.

Identifier  ExFiles\Box 59\3\  Scan070
Date  22th September 1930
  
X603-2.
By.{R.W. Bailey - Chief Engineer} from EFC.
c. Hs.{Lord Ernest Hives - Chair}
EFC2/AD22.9.30.
X.6031.
X.6032.
LUCAS & BOSCH BUZZER TYPE HORN.
Further tests and comparison of the Lucas and Bosch buzzer type horns have been completed, and attached please find copy of my assistant's report AD.65. dealing with a further exact comparison of these two instruments.
EFC.
Copy of report attached.
  
  


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