Vintage 1920s 30s J.T Para Volt Voltmeter Pocket Size For Sale

The product is a vintage 1920s 30s J.T Para Volt Voltmeter, a pocket-sized scientific instrument used for measuring electrical voltage. This collectable item falls under the category of scientific instruments and is a rare find for collectors interested in historical technology. The compact size of the voltmeter makes it convenient for portable use and adds to its appeal as a unique piece of scientific equipment from the early 20th century.