What's that little recess / nick / indentation for? The one in the inside corner between blade and handle? Izzt for a pencil? Izzt so you can sneak in a feeler gauge right up to the edge? Izzt like the uvula?
It is for clearance. If you are checking squareness of two surfaces and the edge where the two surfaces meet together is not beveled, a small lip or burr would make checking difficult.
-Bruce
And all this time I thought it was a pivot.
Kevin
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