San Francisco Chronicle, Price: $639.95, Levenhuk 870T is a reliable biological trinocular microscope that may be used for both bright field and dark field observations. It is commonly used in various medical laboratories for clinical research in dermatology, biochemistry, cytology, hematology, and other scientific studies. Due to the trinocular design of the head, this model may be turned into a digital microscope with an addition of an eyepiece digital camera.