Controls and selecting switches in echosounder , autopilot , course recorder ?

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FOLLOW

echo sounder-range selector knob, paper speed, stylus speed,sensitivity or gain, fix marker, change over sensor, panel brill.
auto pilot-course selector, rudder control, counter rudder, yaw,permanent helm, speed, rudder limit, off course alarm,syn. control, auto/follow up/non follow up, dimmer
course recorder- on -off switch , bulb,