binocular microscope![click to hear](/images/speaker.jpg)
Its two eyepieces allow both eyes to be fully applied; this provides a degree of depth to the image and prevents eyestrain.
coarse adjustment knob ![click to hear](/images/speaker.jpg)
Medium-precision focusing device for adjusting the distance between the objective and the object under study.
body tube ![click to hear](/images/speaker.jpg)
Metal casing that houses the microscope’s two eyepieces and through which light rays pass.
revolving nosepiece ![click to hear](/images/speaker.jpg)
Rotating plate to which objectives of different powers are fixed to allow them to be used in succession during a study.
arm ![click to hear](/images/speaker.jpg)
Vertical part of the microscope that supports the components (draw tube, stage) and contains the focusing mechanisms.
mechanical stage ![click to hear](/images/speaker.jpg)
Adjustable part with two guiding screws that moves an object from right to left and from front to back on the stage.
stage ![click to hear](/images/speaker.jpg)
Metal plate with an opening in the middle; the glass slide and the components keeping it in place are placed on it.
fine adjustment knob ![click to hear](/images/speaker.jpg)
High-precision focusing device for adjusting the distance between the objective and the object under study.
mechanical stage control ![click to hear](/images/speaker.jpg)
Device for raising and lowering the mechanical stage.
condenser height adjustment ![click to hear](/images/speaker.jpg)
Screw for raising and lowering the condenser.
condenser ![click to hear](/images/speaker.jpg)
Optical system that usually has two lenses to concentrate the light emitted from the lamp onto the object under study.
lamp ![click to hear](/images/speaker.jpg)
Electric device that produces a light beam to illuminate the object under study.
base ![click to hear](/images/speaker.jpg)
Support that stabilizes the microscope.
condenser adjustment knob ![click to hear](/images/speaker.jpg)
Screw that centers the condenser’s light beam in the field of vision by moving it along a horizontal plane.
field lens adjustment ![click to hear](/images/speaker.jpg)
Device with a variable-diameter opening that adjusts the amount of light illuminating the object.
glass slide ![click to hear](/images/speaker.jpg)
Fine glass plate on which the object to be studied is placed.
stage clip ![click to hear](/images/speaker.jpg)
Springlike metal blade that keeps the glass slide on the stage.
objective ![click to hear](/images/speaker.jpg)
Lens system that captures the light from the observed object and makes it converge to form an enlarged inverted image.
limb top ![click to hear](/images/speaker.jpg)
Upper part of the arm that supports the revolving nosepiece.
eyepiece ![click to hear](/images/speaker.jpg)
System of lenses that acts as a magnifier; the eye looks through it to see an enlarged image of the image produced by the objective.
draw tube ![click to hear](/images/speaker.jpg)
One of two cylindrical tubes that house the eyepieces; it is often made up of two converging lenses.