According to the use requirements, the objective table of metallographic microscope does not need high mechanical strength, but the flatness of the table and the verticality of the axis of the optical system are very demanding. Otherwise, even if the performance of the objective lens is very good, it will affect the uniformity of the field of view definition. Therefore, samples weighing more than 2kg should not be placed on the stage, so as to prevent the stage from being hit, not to knock on the table with a hammer or other objects, to prevent the table from being deformed and reduce the performance of the instrument, not to place heavy objects on the stage for a long time, and to take away the heavy samples when the microscope is not used, so as to prevent the lifting mechanism from being damaged, and to add appropriate amount of grease to the moving parts regularly.

The microscope should be kept by a special person. The storage room should be a clean, well-lit and dry room.

Metallographic microscope * is well placed in the instrument cabinet and divided into several grids according to the variety. * Lower layer * Good desiccant (such as silica gel, calcium chloride, charcoal, etc.) should be placed, and there should be ventilation holes between layers. The cabinet should be more than {{0}}.5 meters away from the wall and 0.2 meters above the ground. Guishangying

There is a registration form for keeping instruments. Large and medium-sized metallographic microscopes should be placed on a special table, covered tightly with a glass cover, and moisture absorbent should be placed inside.