Olympus EHT-421 Buku Petunjuk - Halaman 13

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Observation Tubes

The observation tubes are inclined 45" (except Bi·SW and Tr-SW both

inclined 30°) and rotatable 360°. The tubes can be clamped in any

direction with the clamping screw provided.

For adjustment of interpupillary distance. hold the right and left

eyepiece tubes with both hands and push the tubes together or

pull them apart laterally, whichever is required, while looking at an

image through the eyepieces with both eyes, until perfect binocular

vision is obtained. It is good practice to memorize the individual

interpupillary distance. setting. A scale for this purpose is located

between the eyepiece tubes. (The mechanical tube length of the SW

observation tubes is 160mm when this scale is set at 62.l The eyepiece

tubes are provided with diopter and tube length adjustment rings.

A light path selector lever to direct the light to observation tube or

photo tube, is provided with the trinocular observation tube.

Photo Tube

Light Path Selector lever

;:::===---

Diopter Adjustment Rings

Clamping Screw---tllIO'lt__

Eyepiece Tube

Knurled Ring,--"'-\

~Knurled

Ring

-r-

Eyepiece Positioning Groove

Interpupillary

Distance

Scale

Clamping Screw