The 1960 Rogers Profit Indicator No. 1111 is a vintage slide rule designed for calculating cost or selling percentages. Manufactured in the United States, this collectible item is a piece of retail history from the mid-20th century. With its unique design and functionality, this slide rule serves as a valuable tool for those interested in retail business calculations. This rare find is a must-have for collectors of vintage slide rules and useful business tools.Very good, low wear, hard plastic device with clear markings and plastic sheath