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).
Prefix letters for issuing drawings related to gun schemes, details, and mountings.
| Identifier | ExFiles\Box 175\3\ img117 | |
| Date | 24th May 1918 | |
| E/H.E.25 / 24.MAY.18 H.E. Dept. File Copy To:- Mr. Wormald. Mr. Rowledge. Mr. Hall. Mr. Hives. E Drawings will be issued under the following prefix letters :- Gun Schemes - GS. Gun Details - GD. Gun Mounting and Sight Schemes - GPL. Gun Mounting and Sight Details - GR.{George Ratcliffe} [Strikethrough]To ensure that these new lists will cover all components it is necessary that all gun drawings be immediately handed to inv. and all gun mountings to Mr. S. Wormald to cover single seater aircraft.[/Strikethrough] .O.T.I. | ||