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).
Test report on an 'Avis' type revolution counter, No. 1345, confirming it passed a 100-hour test.
| Identifier | ExFiles\Box 10\3\ 03-page202 | |
| Date | 28th October 1926 | |
| INSPECTION DEPARTMENT. --------------------- TO DEPT.95. FROM DEPT.19. TEST REPORT on Rev.Counter - Type 'AVIS' No.1345. The above instrument has passed its 100 hrs. test satisfactorily and is being despatched plus packing to instructions. CHIEF INSPECTOR. | ||