Use Of The Microscope; Adjust Interpupillary Distance; Focus; Adjusting The Tension Of The Focus Knob - VWR VisiScope 260 Serie Manual De Instrucciones

9.

Use of the microscope

9.1

Adjust interpupillary distance

Hold the right and left eyepiece tube with both hands
and adjust the interpupillary distance by moving the
two parts (Fig. 7) until one circle of light can be seen.
If two circles appear, the interpupillary distance is too
big, and if two overlapped circles appear, the interpu-
pillary distance is too small.
9.2

Focus

Put the sample to be observed on the stage plate
and focus the sample using the focusing knobs of the
stand ①. (Fig. 8)
9.3

Adjusting the tension of the focus knob

• This adjustment allows to increase or decre-
ase the tension of the knob by avoiding an
involuntary descent of the microscope body
under its own weight. Adjust the tension just
above the point where the focus is stable.
Grab the focus knobs with both hands and, holding
left knob rotate the right one in the direction shown in
Fig. 9 to increase the tension. Tension increases or
decreases according the sense of rotation of the right
focus knob.
HOLD
8
Fig. 7
①
Fig. 8
Fig. 9