Olympus CHD Manual de instrucciones - Página 13

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Fig. 17

Fig. 18

iii

Tension Adjustment of the Coarse Adjustment Knobs

1) A tension adjustment ring

is provided next to the coarse adjust-

men t knob. Wi th this device the tension of the coarse adjustmen t is

freely adjustable for either heavy or light movement, depending upon

operator preference.

Applying the blade of a large screwdriver at the knurled periphery of

the tension adjustment ring

G),

rotate the ring in the direction of

the arrow to increase the tension, or reverse the ring to loosen. (Fig.

17)

However, do not loosen the tension adjustment ring too much, be-

cause this may cause the stage to drop or the fine adjustment knobs

to sl ip.

Locking of the Pre-focusing Lever

The lever

is provided to prevent possible contact between speci-

men and objective as well as to simplify coarse focusing. The lever

is locked, turning it in the direction of the arrow in Fig. 18, after

coarse focus has been accomplished. This is convenient for liquid

application or change of specimens, too, since it prevents further

upward travel of the stage by means of the coarse adjustment

knobs, and provides a limiting stop if the stage is lowered and

then raised again. The pre-focusing lever does not restrict fine

focusing.

Unlock this lever when not in use.

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