"Inscrutable object" I love it. A few years back I picked up a saw set at a flea market. It was on the $1 table 'cos the guy didn't know what it was. More recently I picked up a saw sharpening vise at a yard sale. So if anyone wants to have a saw sharpened...

I can't remember that last time that I saw a Mundy Hammer (That is a 28 pound sledge hammer) One devil of a job to swing.

Then there were those mechanical Munroe calculators, who remembers how to do square roots on them?