Reed frequency meters are intended for measurement of frequencies in the range from 45 Hz to 65 Hz. Two-system reed frequency meters are intended for measurement of two frequencies in the system for synchronisation. Their class is 0.5.
Meters are available with different front frames:
ZQ 0317 – 72 x 72 mm
ZQ 0217 – 96 x 96 mm
ZQ 0117 – 144 x 144 mm
ZQ 1217 - 96 x 96 mm
ZQ 1217 - 144 x 144 mm