These early calculators were using in rallies to calculator mileage back in the 50s to 70s. They are incredibly durable and were used even when electronic calculators were available since the electronics couldn’t handle the riggers of a rally. I think it would be totally sweet to outfit a car with one of these for vintage style rallying but I’m a little shy of the asking prices right now.
They trade for $1000-2000 on eBay but this one is going at no reserve for $499 at the moment.
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