The Heatkit AF-1 Analog Frequency Meter, Part 1.

https://wereboar.com/projects/index.php/2025/01/02/the-heatkit-af-1-analog-frequency-meter-part-1/

Next up is this somewhat unique frequency meter (not counter!) from Heathkit. Kind of a stopgap measure between no device and digital devices, this (and it's HP big brother) lasted a few years before vanishing. They're somewhat rare, as they were pretty much put out with yesterday's newspaper when digital devices appeared on the market.

This one is in good physical condition, but needs a full electrical rework. Check out part one on my project page.