WTS: Calibration lights for DIY integrating spheres / lumen tubes - 67 € -

[shirnask]

@CNCman

OK, I just ordered lights. Thank You “maukka” :+1: for your hard work and dedication providing us with these Calibration Lights. :+1:
Now I need a suggestion on plans to build a lumen tube. :question:

See this thread Texas_Ace BLF Calibrated Lumen tube