List of tools with their approximate cost and the reasons for their omission from a standard kit.
| Identifier | ExFiles\Box 20\8\ Scan048 | |
| Date | 23th June 1923 guessed | |
| TOOLS -2- Oyl-W-62323 Part Description Approx. Cost Reason for omission E-16114 2 B.A. box spanner $ .60 Not used by chauffeur E-16115 1/4 " " .47 " E-16112 5/16 " " .65 " E-16113 3/8 " " .65 " E-16124 7/16 " " .65 " E-12644 1/2 " " .63 " F-7254 3/4 " " .94 " E-1776 Oil pump " .48 " F-940 Spring wedge 2.10 (Separation of leaves not necessary (Brushing leaves with kerosene or (old engine oil better. Gaiters, (oil filled, best. E-17360) Valve lifter .68 (Better valve lifters can be bought E-17361) (from accessory stores. Never (carried on car. 4" Smooth file and handle .16 Never used by chauffeur 8" " " " .60 " File handle .05 " Cold chisel .55 " Small adj. spanner .54 (Chauffeur always has his own and (will use it. If provided, will (disappear. Feeler gage 1.00 If provided, will disappear E-18400) Piston pin extractor 1.27 (Not used by any known E-18401) (chauffeur F-7253 Spark plug spanner, replaced by (Rolls-Royce spanner does not AF-7253 Spanner, bought out, saving .51 (fit American spark plugs. F-248 Gas tank spanner .53 Not used $13.04 | ||
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).