The Vintage Pratt & Whitney End Measuring Rods consist of 13 pieces stored in a wood case, ranging in measurement from 1 inch to 12 inches with a mechanical reading. These measuring rods were manufactured in the United States in 1936, making them a valuable tool for metalworking inspection and measurement tasks. The brand's reputation for quality and precision ensures that these rods were used with high accuracy in various industrial applications. Inspected in 1962 last calibration 2007