i bought one of those in the early 70s for big bucks. it was the greatest thing since clean underwear
. if you're checking "points, condensor" ignition systems, there is none better. assuming it works, and you know how to read it, that osilliscope (that dark screen in the center) on raster and superimposed will give you more info in 5 minutes than a modern code reader on our computer cars. if you know how to read the squiggly lines on the osilliscope ( i learned in college and went to the sun school) i can at a glance read those lines. here are some of the things you can spot:
3-dwell variation, this would indicate bad bushings in the dist, this was if the dwell was in a wave pattern between cylinders.
4-a bad plug wire-even which one, like #5.
5-a bad coil.
6-a carbon track in the dist. cap.
7-dwell angle-and varaition.
8-maximum coil capacity (you don't want to know how many new accell coils i condemned) i will never buy an accell product!!
9-incorrect idle adjustment on the carb, lean=hi spike, rich=low spike, hi lo hi lo=needs carb adjustment.
10-engine condition, low compression cylinders will=low voltage firing at the spark plugs, thus lower voltage spikes on those cylinders.
i could go on with more but the point is hook it up a points/condensor car to the scope and MAKE SURE the scope works (look for those squiggly lines and make sure the scope works at all the switch positions)
IF it does by chance work, you will have to learn what all those squiggly lines are telling you, in this age of computers in cars, it is almost a lost art with obsolete equipment.
if it works?? buy it...
EDIT, OH and mister D, your avatar cracks me up every time i see it. i'll give you a gallon of deisel for that sun machine, or i'll give you a gallon of deisel if you come work in my yard for a week...