1970ish marquette "electronic" engine analyzer

[3/4tonYJ]

just picked up another something off Craigslist I don't really need. but was priced right and close to home....(and I still have a little room left in garage)

I was very pleased to see almost all the lights worked and it came with all the probes/wire/stuff. spent acouple hours cleaning up,

i'm looking for a manual or link to explain some of the functions....

 

[txvwnut]

Dads got one of those but a few years newer than yours. Damn thing only worked when it wanted too, which was a PITA when your on commission.