Check the listing for details. Vintage Sampson Tool 7 inch Inside Caliper Made in USA. Condition: Used. Listed at 9.50 USD. The Vintage Sampson Tool 7 inch Inside Caliper is a collectible piece made in the USA. This tool, specifically designed for machining purposes, showcases the craftsmanship and quality of American manufacturing. Perfect for collectors of vintage tools or those interested in machining, this Sampson Tool caliper is a unique and functional addition to any collection.