Coarse Upper Limit Lever; Stage; Dioptric Adjustment - Optika Italy B-810 Serie Manuel D'instructions

9.4 Coarse upper limit lever

The upper limit knob has two functions: prevent the
contact between slide and objective and acts as
"focus memory".
1. After focussing the specimen, pull the lever ①
toward the front of the microscope and lock it.
(Fig. 9).
• IIn this way the focus upper limit is set.
2. Now one can lower the stage with coarse focus
knob, replace the specimen and raise again the
stage up to the upper limit: specimen will be in
approximate focus and will need a fine adjustment
to get the proper focus..
• Fine focus movement is not affected by the
coarse focus lock.
• To unlock, move the lever in the opposite
direction to the one used for the locking.
• Two stoppers ② are inserted on the frame. DO
NOT REMOVE THE TWO STOPPERS.

9.5 Stage

Stage accepts standard slides 26 x 76 mm, thickness
1,2 mm with coverlside 0,17mm.
It is possible to place two slides side by side on the
stage.
• Open the spring arm of the slide holder ③
and place frontally the slides on the stage.
(Fig. 10)
• Gently release the spring arm of the slide
holder.
• A sudden release of the the spring arm could
cause the falling of the slide.
9.6 Dioptric adjustment
1. Look into the right eyepiece with your right eye
only, and focus on the specimen.
2. Look into the left eyepiece with your left eye
only. If the image is not sharp, use the dioptric
adjustment ring ④ to compensate. (Fig. 11)
• The adjustment range is ±5 diopter. The number
indicated on the adjustment ring graduation
should correspond to the operator's dioptric
correction.
②
③
Page 13
①
UNLOCK
LOCK
④
Fig. 9
Fig. 10
Fig. 11