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).
Brochure for 'Perfloc Nuts' from The Engineering Improvement Co., Ltd.
| Identifier | ExFiles\Box 77\5\ scan0214 | |
| Date | 25th August 1914 guessed | |
| PERFLOC NUTS The perfect locking nut which avoids accidents on aeroplanes, motors, railways, etc. Head Office :-- THE ENGINEERING IMPROVEMENT CO., LTD., [Struck through: 39, St.{Capt. P. R. Strong} James Street,] [Struck through: London, S.W.] 4a, First Avenue Hotel Buildings, High Holborn, W.C. Telephone No.: 647 HOLBORN | ||