Konus Biorex 2 Biological Binocular 1000x Microscope w/Halogen Illuminator 5601. In this case the eyepieces are fixed and it is easier to see the specimen preparation. After the preparation you can see the specimen using both eyes. This decreases eye strain greatly which is especially important when observing numerous specimens. Using the same eyepieces you can also see the preparation of many other biological procedures. With this application the Konus Biorex 2 is an excellent choice to prepare and study tissue sections buccal cells vacci etc. It can be used as a lab.