Levenhuk Micro Terra 77956 [4/32] Discovery micro microscopes

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DISCOVERY MICRO MICROSCOPES

General use

The Discovery Micro microscope is safe for health, life and property of the consumer and the environment when

properly used, and meets the requirements of international standards. The microscope is designed for observing

transparent objects in the transmitted light using the bright eld method. May be used by kids over 5 years old.

Caution! Children should use the microscope under an adult’s supervision only.

Microscope parts

• Base. It supports the weight of the microscope and houses the illumination source, electronics and control

• Stage. Sturdy and reliable stage with two specimen holders can be used to move your slides while observing

them. The lower illumination light passes through the opening in the middle of the stage.

• Diaphragm disk. Is located below the stage and has apertures of various diameter to adjust the passing light

rays. Rotate the disk to select the desired aperture.

• Focusing knob. A coarse focusing system allows moving the stage up and down adjusting the sharpness of

the specimen image.

• Lower illumination. LED illumination with adjustable brightness can be powered by 2 AA batteries. The lower

illumination is used to observe transparent objects. Using a supplemental light source, such as a table lamp,

directed at the specimen will enable you to observe less transparent objects.

Using the microscope

• Place a specimen on the stage and x it with the holders.

• Select the 4x objective rotating the revolving nosepiece.

• Move the specimen to place its thickest part exactly under the objective.

• Rotate the focusing knob to slowly raise the stage until the objective is close to the specimen; keep checking

the distance between the objective and the object to avoid their contact. Caution! The objective should not

touch the specimen, otherwise the objective or/and the specimen might be damaged.

• Look through the installed eyepiece and lower the stage slowly rotating the focusing knob until you see the

specimen image.

• Such adjustment protects the frontal lens from contacting the object when you use objectives of other

magnications; though, slight refocusing might be required.

image in the microscope’s eld of view as precisely as possible. Otherwise, the desired segment might fail to center

in the eld of view of the higher power objective. Now you can switch to a more powerful objective by rotating the

revolving nosepiece. Adjust the image focus if required.