Old tools can be mind bogling trying to figure out what some of them are used for.
My father gave me a hand full of yankee screw drivers. All of them had a forward and reverse on them except one. I figured that it was just an early yankee screw driver until I was cleaning up the brass on the thing.
It has the name of a casket company on it. That is why there was no reverse. Once they screwed the lid on the casket it was on there to stay so no need for a reverse to take the screws out.
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