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).
With measurements for positive and negative battery plates.
| Identifier | ExFiles\Box 58\4\ Scan107 | |
| Date | 22th June 1933 | |
| "From end of feet to top of tapper post is 8in " " " " " " lug 5 7/8in Width of set of plates is 1 1/2 in. negative plate Width 5 9/16 Thickness 1/8 Depth from top of plates To end of feet 5 in. to bottom of plate 4 1/16" From top of tapper post to end of plate is 8 inches From end of plate to top of lug is 5 3/8 inches Width of set of plates is 1 7/8" HB{C. E. Harcombe} 22.6.33 | ||