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).
Graph and diagram for correcting the out-of-balance of a Peregrine II propeller shaft.
| Identifier | ExFiles\Box 2\7\ B002_X 140 to 143-page03 | |
| Date | 10th September 1932 guessed | |
| CORRECTION FOR OUT OF BALANCE - PROPELLER SHAFT PEREGRINE II DEPTH TO DRILL 'D' - INS .375 DRILL WITH 120° INCLUDED ANGLE ONE HOLE TWO HOLES OUT OF BALANCE - Oz INS 4.800 DIA .375 DIA 'D' 60° | ||