The 407026 is a heavy-duty light meter designed to measure illumination in both foot candles and lux with simultaneous display capability. It features multiple lighting type selections including Tungsten/Daylight, Fluorescent, Sodium, and Mercury to enhance measurement accuracy, with a basic accuracy of ±4% full scale. The meter includes a large 1.4-inch LCD display with 1999-count resolution, cosine and color correction via a precision photodiode, and data recording functions for MIN, MAX, and AVG readings. A built-in RS232 serial interface enables optional PC connectivity through data acquisition software, and the unit operates on a 9V battery with automatic shut-off functionality. The compact dimensions of 7 x 2.9 x 1.3 inches (178 x 74 x 33 mm) and weight of 1.6 lbs (726 g) make it portable for field measurements in industrial, architectural, and environmental lighting assessment applications.