The VTG Lufkin Rule Co No680B Inside Micrometer Set is a high-quality tool manufactured in Saginaw, Michigan, USA by the reputable brand Lufkin. This inside micrometer set is designed for precise measurements and inspection of internal dimensions with its model number 680B. It is a reliable and durable option for businesses in the CNC, metalworking, and manufacturing industries that require accurate micrometers for their operations. Made in the United States, this product ensures top-notch craftsmanship and performance for demanding industrial applications.