This is a vintage General MG Ultra Test No. 107-6 dial caliper, a precision measuring instrument crafted from hardened stainless steel. Made in Japan, this high-quality tool features a clear, easy-to-read dial face with fine graduations, a thumb roll for precise adjustment, and a locking screw to secure measurements. It is designed for accurate internal, external, depth, and step measurements. The caliper comes housed in its original fitted wooden storage case, which features protective foam inserts and secure metal clasps. Both the caliper and the wooden case are in very good vintage condition, showing only minor signs of age and use. This classic tool is perfect for machinists, woodworkers, collectors of vintage tools, or anyone appreciating high-quality Japanese craftsmanship.