Eyepiece (Ocular lens): Magnifies the image from the objective lens and allows the observer to view the specimen.

Here are the functions of each numbered part of the microscope:

1. Eyepiece (Ocular lens): Magnifies the image from the objective lens and allows the observer to view the specimen.
2. Eyepiece tube (Body tube): Holds the eyepiece and connects it to the objective lenses.
3. Revolving nosepiece: Rotates to switch between different objective lenses, changing the magnification.
4. Objective lenses: Primary lenses that magnify the specimen, located closest to the slide.
5. Stage clips: Hold the microscope slide firmly in place on the stage.
6. Stage: A flat platform where the specimen slide is placed for viewing.
7. Diaphragm (Iris diaphragm): Controls the amount of light passing through the specimen.
8. Condenser: Gathers and focuses light from the illuminator onto the specimen.
9. Light source (Illuminator/Mirror): Provides light to illuminate the specimen.
10. Base: The bottom support structure of the microscope, providing stability.
11. Fine adjustment knob: Used for small, precise adjustments to bring the specimen into sharp focus, especially at high magnifications.
12. Coarse adjustment knob: Used for large adjustments to move the stage up or down, bringing the specimen into approximate focus.
13. Arm: Connects the head of the microscope to the base and is used for carrying the instrument.
14. Base (foot): The broad, heavy bottom part of the microscope that provides stability.
15. Coarse adjustment knob: (Same as 12) Used for large adjustments to move the stage up or down, bringing the specimen into approximate focus.
16. Fine adjustment knob: (Same as 11) Used for small, precise adjustments to bring the specimen into sharp focus, especially at high magnifications.
17. Stage: (Same as 6) A flat platform where the specimen slide is placed for observation.
18. Stage clips: (Same as 5) Securely hold the microscope slide in place on the stage.
19. Arm: (Same as 13) Connects the head of the microscope to the base and is used for carrying the instrument.
20. Body tube: (Same as 2) Holds the eyepiece and connects it to the objective lenses, ensuring proper alignment.
21. Arm/Frame: (Same as 13 and 19) The main structural support connecting the optical components to the base, used for carrying.