unusable pull-out and lack of manual

Materials and workmanship make a very good and robust.
However, the "telescope" totally useless once you it takes off to its full length.
It also hilt nothing when the focus turns in extended state to stop.
A sharp look can be achieved only when you have the front piece asziehbare maximum pulled a Zenit meters out (then you have unfortunately almost no magnifying power).
After I initially thought of yet that I'm doing something wrong, I desperately on the Internet
and vain a manual or video on Youtube searched.
Supplied with no manual was included.
I regret therefore the purchase and would recommend the article by no means!