Patent for "a calculating-yardstick adapted for use in connection with the dry goods or any other business in which goods are sold by linear measurement, the object in view being to provide, in connection with a linear measuring scale or rule, an indicating device provided with a plurality of price-scales having relation to the measuring-scale and adapted to indicate the price of a given length of an article at a given price per unit of measure, and also adapted to indicate the length of an article of a given price which may be sold for a given amount." (Lines 8-20) Includes instructions and illustrations.