The Vintage Drager Model 31 Gas Detector Pump V=100 is an antique piece that is highly sought after by collectors and enthusiasts. This gas detector pump comes with a handbook and a sealed spare part, ensuring that it is not only historical but also functional. The Drager Model 31 is known for its durability and reliability in detecting gases, making it a valuable tool for industrial and testing purposes. With its vintage charm and practical use, this gas detector pump is a unique addition to any collection or workplace.