San Francisco Chronicle, Price: $119.95, The Levenhuk 50L NG teaching biological microscope.This excellent biological microscope is ideal for use in schools or colleges as well as for your own research of microworld. Superb production quality: case and elements are all metal, not plastic. Focusing mechanism and stage move smoothly, without jerks or backlash. Rotatable head can be fixed in any position, which makes observation much more convenient. Eyepieces, objectives and all other optical elements are multi-coated and highly transparent. All this provides the extremely high image quality and long microscope life without any special maintenance.