What is Nosepiece?

The nosepiece of microscope is a rotating turret that holds the objective lenses. It is located above the stage and below the eyepiece of the microscope. The objective lenses are attached to the nosepiece and can be rotated into position above the specimen on the stage by turning the nosepiece.
It is an important component which allowing the user to change the magnification of the microscope quickly and easily.
According to the number of objective lenses required, the converter generally has three holes, four holes, five holes, and six holes.

For Nosepiece, there are Backward and Outward. In microscopes, the terms "backward" and "outward" refer to the direction in which the objective lenses are positioned on the nosepiece.
--Backward Nosepiece

--Outward Nosepiece

For Nosepiece, there are Manual and auto types.
--Manual Nosepiece
The manual type is in which the objective lenses are not automatically recognized by the microscope. The user need manually rotate the nosepiece to switch objectives.
--Auto Nosepiece
The auto-coded type is in which the objective lenses are automatically recognized by the microscope.
Each objective lens has a unique code that is detected by the microscope when it is rotated into place.
Auto-coded nosepieces are generally considered to be more convenient and user-friendly than manual nosepieces, as they allow for quick and easy switching between objective lenses and provide clear information about which objective lens is in use.
Some of nosepieces can be with Slot for other functions, such as DIC, Polarizing

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