The Triplett Model LT65-NIST Digital Light Meter measures light intensity (up to 40k Foot candles/400k Lux) and verify OSHA safety requirements from fluorescent, metal halide, high‐ pressure sodium, and incandescent sources found in factories, parking lots, schools, offices, transportation lines, warehouses, hospitals, schools, and many other environments. It features a silicon photodiode sensor with spectral response filter, Min/Max function that recalls highest and lowest readings, Data Hold to freeze the reading on the display for easy viewing, and low battery indicator.