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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).
Confirming the correction of fuse wire specifications to 30 SWG Lead Tin Alloy, with added handwritten notes on fusing current limits.

Identifier  ExFiles\Box 61\2\  scan0351
Date  11th August 1920
  
X.2875

BY/Mtnl/H.{Arthur M. Hanbury - Head Complaints} 11. 8. 20.

EFC.
c. EP.{G. Eric Platford - Chief Quality Engineer} (struck through)
c. EP{G. Eric Platford - Chief Quality Engineer}/Mr. Wyer. (EP{G. Eric Platford - Chief Quality Engineer} struck through)
c. C.O.

X.2875 Fuse.

Referring to EFC's memo EFC1/AT. 7. 8. 20. regarding Fuse Wire being to the wrong gauge and also of wrong composition, please note we have instructed a drawing to be made, and the particulars to be added to the L.O.P.

We are stating that the wire is to be 30 SWG.
- Lead Tin Alloy. This should make this matter all O.K.

BY/Mtn.

(Handwritten section)
By/mtn
Fusing current limits for .65" length
Should be given as 4 1/2 - 5 1/2 amperes

Mtn E.F.C.
  
  


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