Focus Adjustment - Unitron System 274 Manual

Focus Adjustment

UNITRON ®
Fig. 8
Fig. 9
Fig. 10
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SYSTEM 274 STEREO MICROSCOPES
Adjusting the Rotation Tension of the
Focus Adjustment Knob (Fig. 8, Fig. 9)
To adjust tension, hold both left and right focus
adjustment knobs ① with both hands, hold the left
knob (to prevent it from turning), and rotate the
right knob clockwise to increase (tighten) or
counterclockwise to decrease (loosen) the focus
knob tension.
After tension adjustment has been completed,
always rotate both adjustment knobs in the same
direction.
Changing the Magnification
The zooming knobs located on both sides of the
zooming body (Fig. 10, black arrow) will change
the magnification of the specimen image.
Total Magnification = Magnification of zoom body
x objective x magnification of eyepiece
(i.e., 0.8 x 0.5 x 10 = 4X)
Moving the Microscope (Fig. 10)
Before moving the microscope, be sure to
remove any slide/samples. When moving the
microscope, hold the stand and base as shown in
Fig. 10 to keep it level.
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