Built by Texas Ace

3.5" or 4.5" Lumen tester 
No assembly needed
Each kit is calibrated for the tube
Lux meter included (REQUIRES 2 x AAA BATTERIES NOT INCLUDED)
5 adapters included (1", 1.25", 1.75", 2.5", 3" and 3.5" with no disk)
Can measure up to 200,000 lumens

Accuracy +/- 5%

Included LUX meter is calibrated for each lumen tube PLEASE DO NOT REPLACE IT! 

>>> Lux meter is in lux but calibrated in lumens so 5000lux = 5000lm <<<

Due to rising cost of materials the 3.5" & 4.5" prices has increased, the 4.5" has to be special order and drop shipped to you if you want the larger diameter tube.