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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).
Letter to the S.U. Carburetter Co. requesting production of carburetter needles with specific dimensions.

Identifier  ExFiles\Box 31\5\  Scan153
Date  4th April 1934
  
X208 1487

Hs{Lord Ernest Hives - Chair}/CTS.{C. Trot Salt - Carburation}2/MA.
4th April, 1934.

The S.U. Carburetter Co.,
East Works,
Bordesley Green Rd.,
Adderley Park,
Birmingham, 8.

Dear Sirs,

With reference to our development of a horizontal type carburetter, will you please produce 6 of each type of needle to the following dimensions. You have already handed to us 1 pair of needles marked 'XB3', but for convenience we repeat the measurements below.

6 off. XB3.
1. 97.0 2. 97.0 3. 97.0 4. 90.0 5. 83.0 6. 79.5 7. 78.0 8. 76.5 9. 75.0 10. 73.5 11. 72.0 12. 70.5 13. 69.0

6 off.
1. 97.0 2. 97.0 3. 97.0 4. 90.0 5. 83.0 6. 79.5 7. 78.0 8. 76.5 9. 75.0 10. 74.0 11. 73.0 12. 72.0 13. 71.0

Measurement in thous' of an inch at intervals of .125 from the shoulder.

Yours faithfully,

FOR ROLLS-ROYCE LIMITED.
  
  


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