Tore
I have been trying to figure out about a 2nd mechanical indicator system for the hydroplanes operators in the CR and I simply cannot remember to have seen them. Teleflex is a well known make even today and exsisted in the wartime. At that time the system was basically a flexible cable in an armed hose for transmitting mechanical power.
Well, I have found following description (Type IXC Design Study,
http://uboatarchive.net/DesignStudiesTypeIXC.htm):
f. Mechanical Bow Plane Angle Indicator System
This system is identical with the Teleflex systems installed in USN surface vessels in various applications and is so called by the Germans. Details of the system may be obtained from any Teleflex instruction book.
When I wonder about this a bit longer, I guess, even name "Teleflex" indicates the flexible cable, as you have written, so I pretty sure, you are right.
But I am sorry I cannot remember a mechanical (Teleflex) connection to the hydroplaneindicators in the controlroom, it should be possible to see the teleflexcable on one of the photos.
I have attached some photos (one from U505, other from U995), but I also cannot see flexible cable.
And one more photo from U570:
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Thanks, regards
Maciek