This vintage ammeter gauge from Marion is a must-have for any aviation enthusiast. With its unique design and historical significance, this HS3 gauge instrument is perfect for collectors and aircraft enthusiasts alike. Made for RAF vintage aircraft, this gauge is built to last and adds a touch of authenticity to any aviation display. The gauge is easy to install and adds a level of detail that can't be found with modern instruments. Don't miss out on the opportunity to own a piece of aviation history with this rare and unique gauge from Marion.