5
Focus
For microscope slides - place a specimen slide under the stage clips
and move into position for viewing. Use the 2x objective first. Raise the
stage until it will go no higher (stage stop controls this). Then looking
through the eyepieces and using the coarse adjust knob, lower the stage
until the specimen is in focus. Use the smaller fine adjust knob to now
sharpen the focus and attain maximum resolution. Now rotate the 4x
objective into place, and you should only have to use the fine adjust to
achieve a crisp focus (The microscope is Parfocal). Now the 10x and 40x
objectives can be similarly utilized if needed.
With coaxial focusing both the coarse focus (large knob) and fine
focus (small knob) are on the same axis. Having both sets of knobs on
the same axis makes it easier to switch from one focus knob to the other
without moving eyes away from the eyepieces.
Eyepiece(s) and Head
The widefield eyepiece is locked in to place to avoid loss. A pointer is
built in to the eyepiece.
There are three kinds of heads available for the T-193XC (Cordless
Comprehensive Dual Purpose Scope) series of microscopes. The T-
1931C is monocular with a single eyepiece.
The T-1932C has a dual opposing head which allows two people to
look at the same specimen at the same time, or connect a camera to one
eyepiece for projecting image to a group. There is a diopter on one
eyepiece tube for independent focusing of each eyepiece.
The T-1933C has two eyepieces with a diopter on one eyepiece to
compensate for differential visual acuity between an individual's eyes.
The Seidentopf binocular head allows adjustment for interpupillary
(interocular) adjustment. The eyepieces will move to exactly match the
distance between the user's eyes.
