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).
Compatibility and exchange of U.3 and E.H.T.2 rectifying valves.
| Identifier | ExFiles\Box 41\2\ Scan067 | |
| Date | 28th October 1927 | |
| X3646 To ROY.{Sir Henry Royce} from EFC. EFCL/T28.10.27. RE U.3. AND E.H.T.2. RECTIFYING VALVES. We have seen the G.E.C. letter of the 24th inst. with reference to this matter. What we are uncertain about is as to whether the E.H.T.2. valve can readily be placed in the rectifying unit which we have made, and we should be much obliged if they could give us an outline drawing of this valve showing the outside dimensions, and the type of cap or connections. If we can conveniently get it into the unit we have made, we shall then ask you to order one and accept credit for the new U.3. at present in our possession. Also we should hope/in that case to have returned to us the old U.3. valve which we sent to them for examination, as we can still do something with this. In the meanwhile we are not using the new U.3. which they have sent. EFC. | ||