Microscope

• Ocular lens


  The lens that magnifies the specimen, usually by 10 times (10x). This is the lens you look into
• Coarse adjustment knob


  This knob moves the stage up or down to focus on the specimen. This is the first knob you use to focus on a specimen
• Fine adjustment knob


  Use this lens to sharpen an image under low and medium power. It is the only adjustment knob needed with high-power lens
• Revolving Nosepiece


  This is where the objective lenses are mounted. Rotate the lens to select low - medium or high - power lenses
• Objective lenses


  • Low - power (4x)
  • Medium - power (10x)
  • High - power (40x)
• Keep the objective lenses free of dirt and fingerprints
• Stage


  This is where you place a slide for observation. Always keep the stage dry
• Stage clips


  These are used to hold a slide in position on the stage
• Diaphragm


  This has different - sized holes that let different amounts of light pass through the specimen on the stage
• Lamp


  It supplies the light that passes through the specimen on the stage. Microscopes that do not have a lamp may have a mirror to collect and direct light
• Arm


  The arm holds the tube in place and is used to carry the microscope
• Base


  This provides a stable platform for the microscope. Always set it on a flat dry uncluttered surface
• Tube


  The tube separates the ocular lens from the objective lenses at a distance calculated for proper magnification
• Condenser Lens


  This lens is under the stage. It helps focus light onto the specimen on top of the stage