The Bird 43 Thruline Wattmeter is a high-quality, universal wattmeter designed for radio communication equipment. Made in the United States by Bird, a reputable brand known for its precision instruments, this wattmeter is compatible with a wide range of devices. Its purpose is to accurately measure the power output of the equipment being used, ensuring optimal performance and efficiency. This product is essential for radio communication enthusiasts and professionals looking to maintain and improve the performance of their equipment.  Excellent condition and very clean.  Includes leather case.