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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).
Querying a decision on the thickness of ebonite battery separators following correspondence with a supplier.

Identifier  ExFiles\Box 54\5\  Scan071
Date  23th February 1926
  
EFC. from ROY.{Sir Henry Royce}
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Batteries
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X465-5
ROY{Sir Henry Royce}11/MG/23.2.26
----------------

Peto & Radford write:-

"We are in receipt of yours of the 15th inst., ROY{Sir Henry Royce}14/MG.
"We do not think it is quite settled that we continue with the .4 m/m
"thick ebonite as the thicker material previously agreed on would
"undoubtedly add to the life of the batteries if any little electrical
"difficulty there may be can be got over. The matter is still
"subject for discussion between our technical departments.

Would you kindly advise if the matter has now been
agreed, as I understood it was decided we should carry on with
the .4 m/m separators.

ROY.{Sir Henry Royce}
  
  


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