Dating old tools
When it comes to determining the age of stuff scientists dig out of the ground, whether fossil or artifact, “there are good dates and bad dates and ugly dates,” says paleoanthropologist John Shea of Stony Brook University.
Old fools are OK most of the time but old tools that not grounded will take out old fools and young fools. God Bless and Good Luck les Yes, the joy stick handle is held on with a sliding dovetail, fastened with a knurled knob.It's all metal with a black knob on one side of the base and a metal pistol grip on the other..like a d-handle, more like a joy-stick.Only 9 A (at 115 V AC/DC) so that makes it about 1 Hp I guess. is it attached to the router with what looks like a dovetail joint?Amazingly they sometimes have manuals and parts for some of their old tools. Personally I don't think it's worth spending the time if it's more than ten minutes.As usual if you pursue other things and sort of keep an eye peeled you might stumble on something sooner or later.
Egyptologists, for example, created a relative chronology of pre-pharaonic Egypt based on increasing complexity in ceramics found at burial sites.