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).
Order for a Dewrance pressure gauge for a sparking plug test rig.
| Identifier | ExFiles\Box 58\2\ Scan178 | |
| Date | 1st March 1935 | |
| [Struck through: Roy{Sir Henry Royce}] - from EJJ/JV. c to Hs{Lord Ernest Hives - Chair}/Wst. Order No. 815. EJJ/JV5/JC4. 3. 35. Re Sparking Plug Test Rig, Electrical Exp. Dept. Please order from Messrs. Dewrance & Co.:- 1 - Dewrance Pressure Gauge, figure 3941, calibrated 0 to 200 lbs. per square inch - 3" dial. Deliver to Mr. West, Electrical Experimental Department. EJJ/JV. | ||