Chadwick Safety Automatic Road Guide Circa 1911

trulyvintage

Well-known member
You need a human navigator on board
with a degree in education to figure this out


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581315



Jim
 
That must have been expensive. I'll bet that you had to bring it up to date along your route fairly often. In 1911, I wonder how they collected data for the "perforated record disc" even for the few roads of the time?
 
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