Here's a quick look at the Bird 43 wattmeter. For nearly 70 years, the Bird 43 Wattmeter has been and remains the standard of the industry. You can see more about this vintage device on their website Birdrf.com. There are usually lots of them for sale on Ebay along with the various slugs. Slugs are inserts that determine the power level and frequency.
15 сен 2024