Large and heavy vintage Bausch and Lomb microscope. Has dual eye lenses as shown. Both lenses are fine.There is what looks like 3 rectangular lenses on underside of top. They are different lengths. I can not find a model number. There is one online just like this-it is a zoom model. Condition overall is fine. Raises up and down everything moves as it should. There are some areas with light corrosion-mostly the screw heads.It is missing mirror that would be under plate where specimen would be placed. Whole body of microscope tilts back.