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Note: Take care when rotating 40x objective into place. This is the longest lens and has a spring
retractable mechanism which retracts slightly into its housing if the front of the lens comes in
contact with the specimen slide while focusing the microscope. This prevents damage to the lens
or slide.
Objective
Din 4X
Din 10X
Din 40X retractable
MAINTENANCE
WARNING: For your own safety, when servicing models with electric illuminators, turn switch to
OFF position and remove plug from power source before maintaining microscope. If the power
cord is worn, cut or damaged in anyway, have it replaced at once to avoid shock or fire hazard.
1. OPTICAL MAINTENANCE
A. Do not attempt to disassemble any lens components. Consult an expert technical service
company when repairs not covered by these instructions are needed.
B. Prior to cleaning any lens surface, brush dirt and lint off lens surface with camel hair brush or
compressed air. Use of air in a can, available at most computer stores, is good source of clean
air.
C. Do not remove eyepiece lens or objective lenses from microscope. Clean only the outer lens
surface by breathing on lens to dampen surface, then wipe with lens paper or cotton swab. Avoid
wiping lens surface while dry, as lenses are scratched very easily.
2. MECHANICAL MAINTENANCE
A. Rack stop screw has been pre-adjusted at the factory, and should not require readjustment.
However, if you do attempt readjustment, note the following: Rack stop screw is located in center
of arm behind stage platform. Loosen round knurled locking nut by turning counter-clockwise.
Loosen stop screw, but do not remove. Focus microscope on standard slide until sharp image is
obtained. Rotate rack stop screw clock-wise until tight. Lock into position with locking nut.
Needle nose pliers might be needed to loosen and retighten the round locking nut.
B. Tension adjustment. This controls amount of tension in focusing mechanism and prevents stage
from drifting down from its own weight and causing image to move out of focus during viewing.
a) Tension adjustment collar is located between arm and focus knob on left side of microscope.
With a 1.5 mm Allen key wrench, loosen the Allen set screw located in one of the four holes
located on tension adjustment collar. There is a set screw in only one of these holes.
b) To tighten tension, turn collar in a clock-wise direction. Use of a wide rubber band will provide
a better grip on the tension adjustment collar. It is advisable to leave tension as loose as
possible, tightening only enough to keep stage from drifting down and out of focus from its
own weight. Do not rest hands on stage while viewing, as weight of hands can cause image
to move in and out of focus. After adjusting, tighten the set screw to lock collar in place.
C. Metal parts: Use a clean, damp cloth to remove dust or dirt from metal part followed by a dry cloth.
Objective Specification Chart
N.A.
Color Code
Ring
0.10
Red
0.25
Yellow
0.65
Blue
5
Field of
Working
View
Distance
4.5mm
18.5mm
1.8mm
6.4mm
0.45mm
0.38mm
Magnification with
WF10X eyepiece
40X
100X
400X
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