The Aven Tools 26800B-323 DSZV-44 Stereo Zoom Trinocular Microscope System features premium quality optics and is designed for industrial inspection and laboratories. The operator can see 3D images through the eyepieces and 2D images simultaneously on an external monitor connected to a USB color camera on the trinocular port. A 60-LED ring light with dimmer control is built into the focus mount, which has coarse and fine focusing for precise control. The system includes imaging software for image capture and measurement. The base has a large working area of 8.6 x 11 in. (220 x 284 mm).