Coil Tester needed

KR500 said:
The units which need a bulb use a Geisler tube. They were used in distributor testers and also the ball point looking testers to test for spark. Snap On used to carry them in their parts books. Don't know who presently supplies them. I can supply instruction sheet and schematic for the various Snap on testers.
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Hello KR500, I would be thrilled to get an instruction sheet and schematic for my vintage Snap-On MT-640 coil & condenser tester. When were these built?


Thank you,
Kyle
 
d.j. moordigian said:
Bob,
I have one just like your's...BUT it's missing the neon bulb. Is there a number
on the bulb..OR do you know were I could purchase one?
Thanks,
Dudley
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The bulb in mine broke in shipping and I haven't been able to find
another, there was no number on it.


Bob
 
Thank you KR500, Bob C and katy...
I'll start the hunt. When I bought it, without the bulb, I did use it too check my Model A
coils and it did work. I think it's kind of a "buffer" for lack of a better word..for the bulb.
djm
 
I was thinking maybe it would glow when there was power at the terminals
from the coil being tested so you don't touch them.:eek:
Bob
 
My Dad from about 1925 on to 1965 made a living as a mechanic. He built a test set of the day, to check current, and leakage current (with a milliamp meter, along with lights for just plain continuity testing and as you can see from the pic's also distributor points with a heater motor with a single lobe cam on the shaft, that speed could be adjusted with a rheostat as well as spark gap of the coil. The unit also worked to test condensers. Clever! Today ya just go buy one or more to do these chores.
 

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