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| Cyril Donaldson and George LeCain, Tool Design, Second edition, McGraw Hill, 1957 |
Interesting, the mix of fractional and decimal measurements.
with apologies to Ogden Nash...
Here's a Dutch pamphlet for the Fiat 500 Gardener (sounds better in Italian). Four people with luggage seems optimistic, and the cutaway view doesn't provide much more info on how everything fits.
This appears to be a tappet wrench, 1/2" on one end, 5/16" on the other. made by Billings and Spencer probably in the 1930s. No information turns up when I do a Google search. According to Alloy Artifacts, the Triangle B logo was registered in 1905, The Life-Time brand name 1928.