Anyone familiar with Century NSD-360A HSI ?
I am looking for a used Century NSD-360A HSI, I've found a few on ebay however they are in a "slaved" configuration, I want the unslaved model but i notice both the slaved and unslaved have the card cage adjustment knob. Is the slave/unslave thing a setting inside the unit or could i buy one that is slaved and just not use the flux gate attachment and adjust for correct heading manually?