This vintage Duffers Scientific 272D Weld Current Monitor Program Monitor is a must-have for any welding enthusiast. With its reliable performance and precision, it is perfect for monitoring welding current and voltage, making it an ideal tool for any welding project. The monitor is designed with high-quality materials, ensuring durability and longevity. Its brand, Duffers Scientific Inc., is well-known for producing top-notch welding equipment and accessories. The monitor is perfect for those in the business and industrial sectors, particularly those involved in CNC, metalworking, and manufacturing. Whether you're a professional welder or a DIY enthusiast, this vintage Duffers Scientific 272D Weld Current Monitor Program Monitor is an excellent addition to your welding equipment and accessories. Nothing happens when plugged in. It looks cool though.