67C Bird Wattmeter
The 67C is a wattmeter from Bird. The Bird 6154 Termaline RF Wattmeter that is designed to measure RF power under non-radiating conditions. The wattmeter is built around an accurate 50 ohm coaxial load resistor which becomes the transmitter load element, providing a practically reflectionless line termination from 25 to 1000 MHz. Power input to the load resistor is measured by a four-range crystal voltmeter reading directly in watts (5/15/50/150 W). A toggle switch determines the scale.