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This is a stonemason's 'sinking square' - used to determine depths of mouldings, carvings, etc. on a piece of worked stone. Mills Bros were manufacturers of mason's tools, being situated in Wandwsorth Road, South London, an area which was the centre of the capital's stone working industry until the 1970s.


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I think the only answer, so far, is that there isn't a specific or vital woodworking reason. Perhaps, a weak argument can be made that it allows the tang or blade to fit nicely into the stock. This agrees with the few references to this I've been able to find anywhere, including this one from the comments: "The slot end is rounded whilst the other is ...


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I don't know. All those while geometrically correct depend at some point on some one visual judgement like getting your right angle perfectly bisected how to do that? Or drawling the two lines that bisect same amount circle? I would make a circle 2" on paper with end dowel or compass, cut out circle, fold in half then half again center fold= center, ...


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What is the proper way to measure for a miter joint? There are often several good ways to tackle a woodworking task, and miter joints are certainly in that category. Whether to measure from the inside, the outside, or along the rabbet depends on your setup and which measurement is most important to you. If you're using a table saw or miter saw and none of ...


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