Explain the purpose of the following figure. 
Definitions:
Supportive Frame
A structural component or system designed to provide support and stability, often referring to skeletal or architectural structures.
Body Tube
In microscopy, the body tube connects the eyepiece to the objective lenses, aligning the optical components for image focus.
Nosepiece
A rotating part of a microscope that holds the objectives and can be turned to change from one magnification to another.
Electrical Cord
A length of insulated wire used to conduct electricity from a power source to an electrical appliance or device.
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