A microscope is an instrument used in magnifying and viewing organisms smaller than 0.1mm that is too tiny to be seen by the human eyes. A compound light microscope consists of the following parts:
• Revolving nose piece: it is used for selecting lens to be used and to be in line with the eye piece.
• Objective lenses (low, medium and high power): for magnification of object
• Eye piece lens or ocular: for viewing magnified object.
• Body tube: provides attachment to eyepiece, revolving nose piece, low-power, medium-power and high-power objective lens.