new for ol

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
NEW FOR OLD. A term used in the law of insurance in cases of adjustment of a 
loss, when it has been but partial. In making such adjustment the rule is to 
apply the old materials towards the payment of the new, by deducting the 
value of them from the gross amount of the expenses for repairs, and to 
allow the deduction of one-third new for old upon the balance. See 1 Cowen, 
265; 4 Cowen, 245; 4 Ohio, 284; 7 Pick. 259; 14 Pick. 141. 
    

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