Handheld laser dust measuring device for monitoring clean room particulate concentrations, indoor air quality and exposure to dust- Measures 6 sizes of particles: 0.3 µm, 0.5 µm, 1.0 µm, 2.5 µm, 5.0 µm, 10 µm- Offers a robust 80 MB internal memory and microSD card slot- Features a large, full-color LCD display with backlight- Includes a built-in camera for image and video recording- Contains senso..