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Old 02-09-2020, 06:13 PM   #12
Junior Member
Join Date: Oct 2011
Location: Holt, Michigan
Posts: 20
Default Re: Coil Tester needed

Originally Posted by Bob C View Post
From the bottom of the knob to the tip of the point is 1 51/64".
I would like to find the neon bulb. It shows in the picture but the seller
did a lousy packing job and it was broken when it arrived.


Bob, thank you for taking the time to measure that. My Snap-On MT-640 model's stationary point appears to be about 3 times longer than the Snap-On MT-335 model. The adjustment knobs are different lengths. From your photo I think the two brass posts are about the same distance apart. Do you or any other members know what is a satisfactory distance the spark should jump for a 6 volt coil to be considered good.

Thank you again,
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