1 - Body tube: The body tube is a long, cylindrical component of a microscope that houses the ocular lens (eyepiece) and the objective lenses. It is responsible for maintaining the correct distance between the lenses and ensuring that the light passing through the lenses is focused on the specimen.

2 - Revolving nose piece: The revolving nosepiece is a rotating mechanism that holds the objective lenses. It allows the user to easily switch between objective lenses of different magnification powers.

3 - Scanning objective: The scanning objective is the lowest-powered objective lens on a microscope. It typically magnifies the specimen 4x or 5x, and is used to locate the specimen and get a general overview of its structure.

4 - Low power objective: The low power objective is the medium-powered objective lens on a microscope. It usually magnifies the specimen 10x, and is used for observing details that are not visible with the scanning objective.

5 - High power objective: The high power objective is the highest-powered objective lens on a microscope. It typically magnifies the specimen 40x or 50x, and is used for observing fine details of the specimen.

6 - Stage clips: Stage clips are small clips located on the microscope stage that hold the specimen in place during observation. They ensure that the specimen does not move or shift during observation, which can cause blurring or loss of focus.

7 - Diaphragm: The diaphragm is a rotating disk located beneath the stage of a microscope. It regulates the amount of light that passes through the specimen, which can be adjusted to enhance contrast and clarity.

8 - Light source: The light source provides illumination to the specimen being observed. It can be a built-in LED or a separate light source that illuminates the specimen from below or from the side.

9 - Eye piece lens: The eyepiece lens, also known as the ocular lens, is the lens that the user looks through to view the specimen. It typically has a magnification power of 10x, and is located at the top of the body tube.

10 - Arm: The arm is the curved handle of the microscope that connects the base and the body tube. It is used to carry and move the microscope.

11 - Stage: The stage is the flat surface on which the specimen is placed for observation. It is located beneath the objective lenses and is typically moveable for precise positioning of the specimen.

12 - Coarse adjustment: The coarse adjustment knob is a large knob located on the side of the microscope that moves the stage up and down to focus the specimen. It is used for initial focusing at low magnifications.

13 - Fine adjustment: The fine adjustment knob is a smaller knob located on the side of the microscope that moves the stage up and down very slowly to achieve precise focusing of the specimen. It is used for fine adjustments at high magnifications.

14 - Base: The base is the bottom portion of the microscope that provides stability and support. It is usually weighted to prevent the microscope from tipping over during use.