ID:
2552
Maker's Name:
ZHFU
Where made:
China
2020
Dimensions:
7 × 7 × 5.5 cm
Used to monitor the frequency of mains voltage. 380VAC rating. D'Arsonval movement indicates frequency on a scale reading from 45 to 65 Hz divided in 0.5 Hz intervals.
2552 - Mains Frequency Meter (2020)
