Elma 1337 is a digital luminance meter for measuring illuminance from 0 to 10,000,000 lx with 0.1 lx lowest resolution and Class C accuracy. It offers on-board measurement memory, digital display and a PC interface for downloading logged readings. The instrument supports both spot checks and unattended monitoring of lighting conditions. Typical application is workplace lighting surveys, streetlighting verification and photometric acceptance testing per EN 12464-1.