Petrographic microscope nowadays comes into numerous designs. Although they can be different in detail, they are fundamentally the same construction and function. Almost all Petrographic Microscopes are composed of illuminator, substage, assembly, stage, objective lenses, upper polar, Bertrand lens, and ocular lens. Most modern Petrographic Microscope is well equipped with prism positioned between the upper […]

There are some individuals that develop eyestrain or headaches after their extended periods of looking through the polarizing light microscopes. By carefully adjusting the microscope, taking a few simple precaution, and by focusing accurately can minimize this problem of some individual. It should be noted that the seating of the microscope must provide a comfortable […]

Focusing Adjustment
In adjusting the focus of the petrographic polarizing light microscope, the focusing knobs at the base of the microscope is turned until the desired focus is made. Usually, if the adjustment of the focus is made with one of the lenses, the polarizing microscope will remain focused in that manner even when another lens […]