COOKE CORPORATION This Illuminance Meter cal-LIGHT 400, now available for purchase online offers the unique combination of an ergonomic design, and guarantees accurate light measurements with a calibration certificate traceable to US National Standards. Measure light levels in classrooms, libraries, offices, conference rooms, stairways or parking lots. Just Point...Click...Done! The Cooke Corporation. 1091 Centre Road, Suite 100, Auburn Hills, MI 48326-2670. ph:(248) 276-8820; fax: (248) 276-8825; email:;website: