18
the differences in the appearance of the fibres.
Experts can determine the country of origin of
wool based on its appearance under a micro-
scope. Celanese is artificially manufactured by
a long chemical process. All Celanese fibres
show hard, dark lines on a smooth, shining sur-
face. The fibres crinkle in the same way after
drying. Observe the similarities and differences
between the different fibres.
Smartphone holder
2
Attach the smart-
phone holder to the
eyepiece.
The suction cups
must be clean and
free from dust and
dirt. A slight mois-
tening is helpful.
Now press your smartphone on the retaining
plate and make sure that it is properly secured.
As a backup, you should secure it with the en-
closed rubber strap.
Smartphones with a rough surface will not hold
as good as smartphones with a smooth sur-
face.
Now start the Camera app.
The camera needs to rest just above the eye-
piece. Center the smartphone exactly over the
eyepiece, so the image can be seen precisely
centered on your screen.
In some cases you need to adjust with the
zoom function to display the image fullscreen.
A light shading at the edges is possible.
Take the smartphone carefully off the holder
after use.
NOTE:
Make sure that the smartphone can not slip
out of the holder. Bresser GmbH assumes no
liability for any damages caused by a dropped
smartphone.
Troubleshooting
Error
Solution
No recognizable
image
• Turn on light
• Readjust focus
