l Upright Microscopes: These are the most common type.

1. The light source and objective lenses are positioned above the stage.

2. Suitable for a wide range of samples.  

l Inverted Microscopes: 

1. The light source and objectives are located below the stage.

2. Ideal for examining larger or bulkier specimens, such as those in containers or on wafers.  

l Stereo Microscopes: 

1. Provide a three-dimensional view of the specimen.  

2. Useful for larger samples or those requiring manipulation.

3. Often used for lower magnifications.  

I guess you might also want to read the article called Biological Microscope vs. Metallurgical Microscope: Main Differences and Similarities.