Attaching High Power Objectives to Microscope

Attaching High Power Objectives to Microscope.

Attaching High Power Objectives to Microscope

As the difficulty of properly getting an object or a certain portion of it in the field, increases with the magnifying power, it is a good rule to use the lower power objective as a " finder;" after getting the point to be further examined in the center of the field, remove the objective and attach the higher power, and after following the procedure of focusing as with the low power, except that the objective should be brought almost in contact with the cover, the point will be seen in the field or will be found to be close to it.

This plan of focusing as suggested above is always a good one to follow and is observed by many of the most expert manipulators. In many cases, however, the focus is obtained without this precaution, by watching the field as the objective is brought down toward the object, but is often followed by disastrous results. Almost any person who has used the microscope for any length of time is without question aware that valuable preparations have been destroyed in this way.

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