| Context | 
        What factors does  the tannery consider when grading leather? First, size. Often, this is just a  sq. ft measurement, but sometimes skins are graded as S - M - L - XL. Secondly,  weight (thickness) is measured: although hides are usually  split to a uniform thickness, full substance hides may be  rated as light, medium, heavy, etc. Thirdly, defects are considered. Often, this  is the only factor affecting grading: brands, holes, and scars detract from the  grade of the hide in proportion to the size and quantity of defects. Two slightly less noticeable characteristics are sometimes considered by graders: temper, the  general "feel" of the leather, and uniformity, how great  the variations in color and temper are within a single hide or  skin.
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