Extech 401025-NIST Foot Candle/Lux Meter with Nist, Manual adjustment Zero Adj, Approx. 0.4 sec. Sampling Time, Fast & Slow selector Response Time, Indication of "1 " Over input indication, Accurately displays light
Extech Ft Candle Light Meter, NIST Certified 407026-NIST | Zoro