This vintage Breaker Corporation Model 13-500 VSWR/Field Strength Meter is a must-have for any radio enthusiast. Made in the USA, this meter is compatible with Breaker models and features a durable design suitable for field use. It is perfect for measuring the strength of signals and the voltage standing wave ratio (VSWR) in radio communication. The meter is suitable for use with various Breaker Corporation bands and is an essential tool for any radio enthusiast.