Answer:
1. The part into which the ocular fits
2. Directing light rays from the light source onto the specimen
3. Keeping the microscopic slide in position on the stage
4. Place to put the slide to be studied
5. Allowing the stage to move up and down for precise adjustments and final focusing
6. The upper lens for magnification
7. Regulating the amount of light that shines on the specimen
8. Picking up and carrying of the microscope
9. Providing light from beneath the specimen
10. Holding the objectives
11. Movable lenses with different magnifications for the studying of the specimen
12. The part of the microscope that rests on the work surface