BM-9 亮度计 TOPCON 拓普康
品牌：TOPCON 拓普康
The Luminace meter BM-9 is a handy-type luminace meter with wide measurement range and excellent operational
convenience.With newly added 1°measureing field detector ,totally three types of detectors(2°/1°/0.2°)can
handle a wider range of usage
