Check the listing for details. VINTAGE Machinist Depth Gauge. Condition: Used. Listed at 25.00 USD. Item is as shown. The Vintage Machinist Depth Gauge is a rare and valuable collectible tool used by machinists to measure depth in precision machining. This gauge would have been essential for accurate measurements in the production of intricate machinery and equipment. With its durable construction and historical significance in the machinist's craft, this depth gauge is a prized possession for collectors and enthusiasts of vintage tools.