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).
Alterations to the size and specifications of spark gap gauges.
| Identifier | ExFiles\Box 33\3\ Scan002 | |
| Date | 23th December 1910 | |
| R.R. 235A (10011) P 723. 23.11.10) E.P. 7957. X1812 C X423 23.12.10. Re Spark Gap Gauges. Mr. Barrington. 23.12.10. With reference to your sheet of November 14th last altering the size of the spark gap gauges, I would like to call your attention to Mr.Platford's remarks, re the blade .020" thick, on the note herewith. p.p. T. Nadin. Mr Nadin 23.12.10 Please add another blade to the set. :- Magneto Contact Maker '.014" or .35 m/m' and delete the words "and Contact Maker" from the .020" blade. Also alter the taper of the blades to the same as the old ones i.e. about 1/8 wide at the tip, - unless you have received special instructions to the contrary. W Barrington | ||