I found some interesting facts/photos on the telemeter , facts and some theory from me very own melon .
All facts found on one of the most valuable reference sites on the internet , http://forum.axishistory.com/index.php
Fact :
Don't know if these are KDO 40 telemeters but , ........ Early war VoMag Luftwaffe aa units had four vehicle mounted 88's one or more searchlights and a telemeter , vehicle mounted or towed and ground mounted .
Henschels , Mercedes , Bussing Nags , were a few vehicles mentioned .
Some of these units have vehicles with Luftwaffe pioneer units with towed telemeters.
Theory : The more I research the KDO 40 , the more I think that its origins are navel .
The only pics. and info I've found have early war Western and Eastern blitz connections .
After the blitz , West/East , and the Germans were in more static positions [ minus the North African and Russian campaigns ] , these telemeters were found in bunkers and fortified positions on the Westwall , coastal Norway , Italy etc.
Pictures of the telemeter being mobile are almost non-existent , post [ late ] 1943 on .
More info and facts are needed !!!