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Illuminance Meter testing method?

LED Flashlights – General Info

MRsDNF (MRsDNF) January 31, 2019, 9:01pm 3

Try this thread.

Texas_Ace BLF Calibrated Lumen tube / Sphere No math skills needed - Several spheres still available BLF Special Edition Products

10-2023 - I can still build lumen tubes to order Prices for the tubes would be: $185 + shipping for the 3.5” $300 + shipping for the 4.5” Ok, I have had several people ask me if I can make them a lumen Tube / Sphere like mine in recent times. My first sphere was simply too much work (literally months to get it calibrated) to make this possible. Then the other day when testing some 20k+ lumen flashlights. I noticed that my sphere was starting to melt slightly. [Texas Ace MT09R 22,00…

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