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 structure of these sunglasses is designed to create a cooling flow of air (incredibly refreshing to the wearer), while the nosepiece of the frame is also made to be interchangeable.
The frame is designed with an interchangeable nosepiece that will allow for an almost custom fit.
What makes this pair different from others is the way it slides under the nosepiece of the mask.
One thing that distinguishes vintage sunglasses from antique is the presence of the nosepiece.
Rimless frames are the least noticeable type, and they are lightweight because the nosepiece and temples are attached directly to the lenses, eliminating the weight of the rims.
These glasses even include an interchangeable nosepiece in order to increase the comfort factor for its wearer.
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