More about light meter (2)

| 130109 Lux meter 1 Lux – 100 kLux(Designed by Karl-Anton Dichtel) The following is based on text and information the author provided. Due to...

| 130109 Lux meter 1 Lux – 100 kLux(Designed by Karl-Anton Dichtel) The following is based on text and information the author provided. Due to...