The CT-6731 Scherr-Tumico 1-2" Micrometer is a precision micrometer for outside measurements, manufactured by Scherr-Tumico in the United States. With a minimum measurement of 2 inches and a maximum measurement of 2 inches, this micrometer is designed for accurate and reliable measurements in metalworking applications. The model from the 180 series is known for its quality and performance, making it a valuable tool for ensuring precision in various industrial projects.