The ABC analysis is a well known and practical classification of inventory items based on the Pareto principle. The purpose of ABC analysis is to classify the inventory into different groups of A, B, or C, according to importance based on measure of a criterion. Traditionally, the classification of inventory into the A, B, or C categories have generally been based on dollar value per unit multiplied by annual usage rate, commonly known as dollar usage. In recent years, several multi criteria inventory classification technique has been introduced. Apart from unit price and usage, other criteria like leadtime, number of hits, average per hit, ordering cost, scarcity, durability, substitutability, reparability, commonality, criticality etc. has been taken into consideration. In this paper ...