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DIFFERENT TYPES OF TOLERANCE USED IN MECHANICAL DRAWING LIMIT TOLERANCES Gives the absolute maximum EXAMPLE acceptable sizes and minimum 20.02 mm (MAX SIZE) 20.02 19,98 MAX MIN 19.98 mm (IN SIZE) (a) Positive UNILATERAL UNILATERAL TOLERANCES EXAMPLE +0.05 Allows vriation in only one +0.05 20.00 either entirely above direction entirely below the nominal (20.00' 20.05 base size (6) NEGATIVE UNILATERAL EXAMPLE 20.00 _0.05 0.05 (११ १५ 20,00 ma BILATERAL TOLERANCES EXAMPLE Allows unequal variation equal in both the positive and 20.00 + 0.05 mm directions Trom negative (19.95' 20.05 mm) The nominal size +0.05 NOMINAL SIZE 20.00 గగ 0.05 UNILATERAL BILATERAL LIHIT QUICK VIEW

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