Luftwaffe Aircraft Sextant
 

Recently acquired a C. Plath Aircraft Octant in metal case with following info on data plate:

Libellen Oxtant mit Mitttlungseinrichtung

Gerat Nr 127-134 B-2
Werk Nr 82117
Anforderz Fl 23750

Upon searching the internet found out that it is a C. Plath "SOLD" Octant and have some info on its maritime variant. Does anyone have any further info/operating instructions on this instrument. Note: I have various US aircraft sextants in my Aviation Collection with applicable manuals.