8
The viewing distance is correct when the complete visual field can be seen through
both eyepieces and both views combine to produce the effect of a single field of vision.
The viewing distance should be individually set for each user.
5-3
FOCUSING
Mount the welding hand-piece in the supporting arm. Make sure that the hand-piece
has an electrode inserted and is correctly positioned.
Turn the rotary knob - focus (10) until a focus setting is achieved, which is midway
between the min. and max. focus setting.
Adjusting the height of the microscope head mount:
Hold the microscope head (8) in one hand, (avoid touching the microscope lens). With
the other hand loosen the retaining screw of the microscope head mount (9). The
microscope head can now be freely adjusted in height.
Look through the eyepieces and slide the microscope head up or down on the bearing
rod until the object is in focus.
Tighten the retaining screw of the microscope head mount again.
Ensure a sharp image by adjusting the rotary knob - focus (10).
5-4
DIOPTER SETTINGS
The ring for dioptric adjustment (2) is located on the left eye-piece tube (3). In the
normal position, the lower part of the sleeve is aligned with the marking on the eye-
piece tube.
When a user’s eyes have differing strengths of vision:
With only the right eye open, look through the right eye-piece (1) and set the focus
using the rotary knob - focus (10).
Now, with only the left eye open, look through the left eye-piece and adjust the focus by
turning the dioptric adjustment (2) on the left eye-piece tube (3) until the viewed object
is in focus.
6
CARE AND MAINTENANCE
Under normal working conditions, the stereo microscope “USM” needs only a minimum
of maintenance and care. However there are a few vital points, which when observed will
ensure that the device gives lasting service in the years to come.
After finishing working with the “USM”, always cover it with its dust protection cover.
Every so often please check all cables and plugs to make sure that they are not
damaged.
Every now and then, clean the device with a soft cloth.
SHOULD ANY MAINTENANCE OR REPAIRS BE NECESSARY THAT ARE NOT
DESCRIBED IN THIS MANUAL, PLEASE CONTACT YOUR LOCAL DEALER.
6-1 MAINTANENCE OF THE OPTICAL COMPONENTS
Do not try to dismantle the optical components. For repairs that are not described in this
manual, please consult your local dealer or the Lampert Service Centre.
