What is the angle between (in degrees) the planes of two moving coils of a dynamometer type 3-phase power factor meter?

Concept:

Dynamometer type 3-phase power factor meter:

• The power factor meter circuit includes two fixed coils namely pressure coil and current coil.
• Pressure coil is connected across the circuit while the current coil is connected such that it can carry a circuit current or a definite fraction of current.
• The power factor meter circuit include two moving coils. These are rigidly connected to each other so that their axes are at 120° to each other.
• These coils move together and carry the pointer which indicates the power factor of the circuit.
• Unlike, the single-phase dynamometer type power factor meter, it has both voltage coils in series with pure resistances. Instead of fixing the voltage coils 90° apart, we fix those coils 120° apart.