Vintage Allbrit Polar Planimeter, English, Scientific Instrument, Stanley, 1950

This is a large vintage pantagraph. An English, brass scientific mapping instrument, dating to the mid-20th century, circa 1950. Fascinating scale and mechanical interest Displays a...

This is a vintage beam compass. A German, silver nickel cartographer's or architect's drawing instrument by Riefler, dating to the late 20th cent...

This early 20th-century English sovereign balance scale, marked “Harrison”, was designed to verify the weight and authenticity of full and half sovereign gold coins. A finely crafted piece of precision engineering, it features a brass balance arm with two coin slots labeled “Sovereign Warranted” and “Sovereign ½”, ensuring accurate weight measurement. The base, also inscribed with “Harrison” and adorned with a crowned hallmark, reflects its quality craftsmanship. These compact, mechanical scales were widely used by bankers, jewelers, and traders during the early 1900s to prevent fraud and counterfeit currency circulation. Their simple yet effective design remains a testament to the ingenuity of the time. A rare and collectible piece of British numismatic history, this scale is perfect for collectors of antique measuring...

World War II Bristish inspectors Mark III admiralty pattern clinometer by Watts and Son, London, England. The heavy brass relic is in a fitted hardwood case. The instrument consists ...