Unitron Versamet 4, Manual, Page: 15 / 22

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE
UNITRON
73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com
14
OPERATION
(continued)
Adjusting the Focusing Tension (Fig. 15)
If the feel is very heavy when focusing with the focusing
knobs (Fig. 14,
③ & ④
, or the specimen leaves the
focus plane after focusing, adjust the tension with the
tension adjustment ring
①
(Fig. 15).
Turn the tension adjustment ring clockwise to loosen or
counterclockwise to tighten according to user
preference.
IMPORTANT:
DO NOT counter rotate the focusing
knobs as this will cause severe problems and damage to
the focusing system.
Adjusting Interpupillary Distance (Fig. 16)
To adjust the interpupillary distance, hold the left and
right eyetubes while observing a specimen. Rotate the
eyetubes around the central axis until the fields of view
of both eyetubes coincide completely. A complete circle
should be seen in the viewing field when viewing the
specimen slide. An improper adjustment will cause
operator fatigue and will disrupt the objective parfocality.
Where the “
●
”
①
on the eyepiece tube lines up with the
interpupillary distance scale
②
, that is the number for
your interpupillary distance.
The range is 50-75mm. Be sure to write down you
interpupillary number for future operation.
Adjusting the Eyepiece Eyeguards
(Fig. 17)
The Versamet 4 eyepieces come standard with roll-
down eyeguards.
The eyeguards should be rolled down
①
for users
wearing eyeglasses to prevent them from being too far
from observing through the eyepieces. Or, not rolled
down
②
for those who don’t wear glasses to prevent
extraneous light from entering the eyepiece which may
interfere with specimen observation.
①
Fig. 15
Fig 16
. 13
Fig 17
. 13
①
②
①
②