Fine Adjustment Knob. is the larger focusing knob on the microscope; moves the stage up and down and is used to bring the specimen into rough focus. the coarse adjustment knob. Using this on HPO may damage the objective's lens as well as the slide if the objective is accidentally moved too close to the stage. Coarse Adjustment Knob. There are two types of adjustment knobs i.e fine adjustment knobs and the coarse adjustment knobs. From there, fine adjustment can be used to get a clear resolution. The Adjustment knobs – These are knobs that are used to focus the microscope. Its movement is slow and excellent. Unlike the fine adjustment, coarse adjustment moves the lenses quickly. It is used for fine and sharp focussing of the object. When studying a slide in a microscope, begin focusing with the _____-power objective lens in place. Not all microscopes have a condenser adjustment knob. Arm. It helps to adjust the magnification lens to the correct height for better resolution. The coarse adjustment knob is used for large adjustments when focusing a microscope. Coarse adjustment knob – moves the stage nearer or farther from the objective lens; used for focusing at a lower power Fine adjustment knob – also used for focusing the image but in more detail Base – bottom of the microscope that supports all the other parts 13. the fine adjustment knob. Finally, the base is where the light source and power switch are located. In most devices, there is only one adjustment knob for each controllable element. Coarse adjustment knob part of the microscope used when focusing specimen. Coarse vs Fine Adjustment. The coarse adjustment knob is only designed for focusing. The coarse adjustment knob should never be used when viewing in high power with a compound microscope. But in certain cases, there are two adjustment knobs; labeled as coarse and fine adjustments. Other objectives like low power and high power objectives are used with fine Adjustment knob for clearer image in higher resolution. Just about any device can be adjusted to suite the preference of the user. As a general rule, do NOT touch or adjust this knob. Eyepiece or Ocular: It is a lens fitted at the top of the body tube. But if there is a third knob, it is the condenser adjustment knob. Stage – This is the section on which the specimen is placed for … This is a smaller and circular knob seen below the coarse adjustment knob. If there are only two knobs, as on the monocular microscope in Figure 4.1, those two are the coarse focus and the fine focus and you only have to keep those two separate. The function of a microscope's coarse adjustment knob is to improve focus on the object under study by adjusting the lens. Upright, with one hand on its arm and the other hand supporting its base. used to focus the specimen. Moves the stage slightly to sharpen the image. 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