Sehrohr 9 (S.R. 9)
This model is the common periscope used in bunkers. A carrying box contained all the needed parts. For use under extra thick concrete (3.5 meter) an extension pipe was added. Archives also give an S.R.10 to 15.
The Tellevik museum has one in position.
Note the tripod and the closing mechanisme at the ceiling.
The head is sticking out armoured part 735P3.
Several parts of a S.R. 9 are shown here in the original carrying case.
The head seen in detail.