Allowance 2


Allowance 2 :

(1) (Mech Eng) a. A designed difference in the sizes of mating moving mechanical parts to allow space for a film of lubricant between them. b. For nonrunning parts, allowance is the excess in size of the inner part with respect to the space into which it is forced or shrinkfitted so that pressure holds the two parts together. Cf: tolerance. (2) (Build; Brit) A tax deduction for fire protection, such as sprinklers

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