Inverted Biological Microscopes

Inverted microscopes have their optics arranged so the observer is viewing the sample from underneath.  The objectives are mounted under the microscope stage. They allow the user to observe, for instance, the surface large specimens that would not ordinarily fit under a classic upright microscope such as large metal castings, they also permit the easier attachment of accessories such as micro-injectors and, most commonly, they are used for observing cells in culture growing typically on the bottom of a well containing liquid but also for observing large metallurgical specimens..