The pointer frequency meters are used to measure frequencies in power supplies in span of rated frequencies. They have better resolution than reed frequency meters. Moving-coil instrument with electronic transducer. Movement with hairsprings for the creation of the resorting torque. Pivot suspension with spring-loaded jewel bearings for vibration and shock resistance.
Scale 90º
Class - 1.5
Dimensions in mm - 48 x 48 / 72 x 72 / 96 x 96 / 144 x 144
Admissible change in rating voltage: ± 20 %
External magnet field: 0.5 mT
Scales
90º (FA..n) or 240º (FAG..n) scales, practically linear. Coarse-finde division