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At the bottom is a revolving nosepiece, or as it is sometimes called, the " objective changer " .
When objectives are changed by turning the revolving nosepiece, the object should also remain centered.
The unit has a backward facing quadruple nosepiece, with objectives x4, x10, x40 and x100 (oil ).
This means it can be screwed onto a standard camera eyepiece nosepiece or included in a filter wheel.
The frame is designed with an interchangeable nosepiece that will allow for an almost custom fit.