Reading that damn speed strobe disc

you really want no sunlight. (it does not flicker at 60 Hz..)
Best is a strobingsource, 60Hz.. next is a flourecent light. Should be able to get by with a incandecent.. but it is harder to see with.
An LED computer screen might work set to 60Hz refresh rate.. (but this is only a guess)

You could try a blue LED night light plugged into an extension cord. I have a blue and a white one and the blue is so much easier to see for some reason on my cream colored disc with black marks. Doing it at night with all other lights out is also a big help.

One word: KAB

Flourescent light or any multi cell LED light won't work.
You need single-source light. If you're using those modern energy saving lights, replace them for the time being with regular bulb light.
The strobe also should have a certain dgree of glare so the printed out versions less likely will show you anything.
Timing light from Autozone is available to loan for free(loan a tool program when you first purchase it for the full price and than return with all money back) may do the trick where the blinking frequency is fully adjustable.

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