Touring the country in '75, we stopped at my traveling partners grandfolks in Michigan.
Priding ourselves as motorheads capable of propelling a <ahem> vehicle across the US, the old gent invited us to a game in his shop.
He claimed that if we could identify the tool, we could have it!
I only hope to be able to pass on the exhilaration should there be such an opportunity down the road....

~S