This BEEDE ammeter is a high-quality product that is perfect for any boat owner. It is a universal type ammeter that is designed to work with a range of different devices. With a 52mm gauge and a precision of +/- 40A, this ammeter is an excellent choice for anyone who wants to keep an eye on their boat's electrical system. It is manufactured in the United States and comes with a warranty, making it a reliable and long-lasting investment.