Topcon SL-3E, Инструкция по эксплуатации

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OPERATION PROCEDURES
(5) Focusing
* Gross adjustment for alignment or focusing is done by the operation described in (1)
* Fine adjustment for alignment or focusing should be done by the operations described in (2)
and (3) above while looking through the microscope.
OPERATION OF THE ILLUMINATION UNIT
(1) Altering the slit size
By operating the slit width control knob, the slit width can be changed from 0 to 9mm (at the
9mm size, the slit becomes a circle).
The scale should be used simply as a guideline. Your examination purpose will dictate the
correct slit size.
Scale of slit width