I was thinking of making one after my Cigar box therapy, but after seeing the tools and process I decided to hang up my leather chaps.

As an aside,

I do have some Pony clamps and a Swedish spirit level though .

It was made in Eskilstuna by the GGC company (Gustav Georg Carlsson) around the 1920's

fully adjustable and if set correctly very accurate.
And BTW that's some work you have undertaken, ...and you call yourself a Lazy man?

Regards Rob