the arm
The base of a microscope supports the weight of the entire microscope. It provides stability and balance to prevent the microscope from tipping over during use.
the arm
The arm or the frame of the compound microscope supports the body tube.
The arm supports the body tube.
it supports the upper part of the microscope where the eyepiece, draw tube , body tube and the objectives is placed .
the stage
clips
The stage
If you are talking about a microscope - it is called the stage.
The arm of a microscope is the part that supports the microscope head and connects it to the base. It provides stability and allows for easy movement of the microscope head for focusing and positioning.
The stage of the microscope is the part that supports the slide being reviewed. It is the flat platform where the slide is placed for viewing under the lenses of the microscope. The stage often includes clips or a mechanical stage to hold the slide in place.
The body tube of a microscope supports the objective lens system and the eyepiece. This tube holds the optics in place and allows for adjustments to focus on the specimen.