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The first wrench had a straight angle.
Wrenches are pulled at a right angle to the axis of a lever-action and the bolt or nut, working much like a lever.
The way wrenches work are most likely due to the act that it follows and aids the “screw theory”.
He patented the wrench in 1842.
Solymon Merrick was born in 1835.
Srews and wrenches are, surprisingly enough, essential to algebra, calculus, and geometry.