View of V Meter.
The black knob ( with the white indicator stripe ) on front of faceplate is mechanically linked to the needle indicator on the dial when this knob is rotated the indicator needle will move from left to right,
( this configuration i.e. knob and indicator needle are probably not the correct matching as on the real radio, but this is only for effect on this Model )
the Mechanical linkage on this Volt meter is different to the mechanical linkage on the Ma Meter.