Change the EyepieceChange the eyepiece. Most single-lens microscopes come with interchangeable eyepieces that offer different magnifications. They are marked, for example, “1X,” “3X” and 10X.” This refers to how much magnification of the image you will notice when you use the different eyepieces. The 3X eyepiece will magnify the image three times more than the 1X eyepiece, and the 10X eyepiece will magnify the image 10 times relative to the 1X eyepiece. Eyepieces usually just pull out. Put your fingers around the top of the eyepiece and pull it upward.Change the ObjectiveChange the lens (objective). The objective of the microscope is the lens that is focused on the microscope slide. The objective on most single-lens microscopes can be unscrewed and replaced with an objective with a different power of magnification. Make sure the objectives that you interchange have the same type of threads.Change the ZoomChange the zoom power on your microscope. Some microscopes with single lenses have