Editing Used Extensively In Bookbinding

<br>Used extensively in bookbinding, a board shear is a large, hand-operated machine for reducing board or paper. Like scissors, a board shear makes use of two blades to apply shear stress exceeding the paper's shear strength in order to cut. The stationary blade varieties the edge of the reducing desk, with the transferring blade mounted on a cutting arm. Originally often known as a desk gauge shear because its gauge allowed the cutting of consistently-sized materials, the board shear resembles a bigger model of the paper cutters generally found in places of work. The earliest known reference to a board shear comes from an 1842 supplement to Penny Magazine, titled A Day at a Bookbinder's, which included a drawing of a board shear with lots of the main developments already current. Middleton, Bernard (1996). A History of English Craft Bookbinding Technique. Oak Knoll Press & The British Library. Harrison, Gary. "Board Shear". 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