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).
Micro-examination report and photomicrograph of a Wellworthy piston ring for a Bentley chassis.
| Identifier | ExFiles\Box 148\3\ scan0196 | |
| Date | 30th December 1936 | |
| Micro-Examination Report. 1256 M.1244. To Rm{William Robotham - Chief Engineer}/Mr Matthews. HL3/AG.30.12.36. Laboratory. Re: Wellworthy Piston Ring E.61123 for Bentley Chassis. As requested we have taken a photomicrograph No. A.1548 of a transverse section of the outer edge of the above ring. The corner shown in the photo. forms the junction of the two long sides of the L-shaped cross-section of the ring. Hl. KTC Photomicrograph No. A.1548 att. (3 copies). | ||