[Ron Ramirez]

Here's the one I use for 1936-38 Philcos with the bulb mounted behind the dial and pointing at it:

http://www.pinballlife.com/index.php?p=product&id=2561

I had mentioned in another thread that I had a 37-690 with a darkened dial scale, and the original #55 was barely getting the job done. The LED in the link above helped a great deal. The lamp Mondial linked to would also be a good choice.

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Terry, what is "oms"? Mineral spirits? Yes, you can clean those printed phenolic dials with mineral spirits. Just don't get aggressive or use a lot of pressure, or else even mineral spirits will cause the numbers to fade. Never use water, ammonia, or Windex-type cleaners on these dial scales!