Quote:
Originally Posted by old_coot88
In the shop, yes, with a Pomona adapter and Simpson 260. But in the field and on the clock, it wasn't always practical to do so. But we did carry a couple of 'magic light bulbs' consisting of a #44 bulb adapter to put in the plate cap lead, to visually dip the eff.coil. One was for small top caps (6JE6 etc.), the other for big top caps (6JS6 etc.).
With a little practice, it was easy to gauge the current from the 'orangeness' of the bulb's glow.
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Ah, the old 44 bulb test - I saw another shop using one of those testers - had to have some dim lighting to use it, but it worked well. Eby made the one I have. As to the Pomona adapter, I have several, and one homemade one my dad used for years. I use a center-zero "save the flyback" meter - it doesn't care about polarity - just dip to the center...