Kem-Tron Interceptor FC-40 Frequency Counter Manual - Wanted

I have a nice Kem-Tron Interceptor FC-40-T-R frequency counter. It's a great piece of test equipment but I am looking for the manual or for someone to explain the shielded test wire that comes out to back and the bank of "dip switches" in side the case. I would love to fine a manual or copy a manual or find someone that used one and could tell me all about the features and answer my questions.

Thanks for your help and checking out my post here.

Regards,

Lisa