Collators are punch card machines that merge two decks of cards into one or more stacks.
These devices save time by taking a stack of copied or printed paper and separating it into several individual piles. Great for creating booklets, pamphlets or any document needing to be put in order. The paper can be stapled, offset or left in a single pile, depending on the collator. Collators are exteremely popular in schools and universities for making tests and are also often used with booklet makers, in print shops and in other businesses.