Carl Zeiss Jena 10 & 20 x 42 Relief-Scherenfernrohr, circa 1904.

10 and 20 times magnification. 42 mm objective lenses.

Serial number 2272.

In original fitted leather backpack case, with filters and sunshades.

Marked: Vor Bewegen der Arme Klemmvorrichtungen lösen

Later British War Department markings, W /|\ D  –  B.S. No. 7

Literature: Zeiss Handfernglaser 1919-1946, Modelle – Merkmale – Mythos, Hans Seeger. Pages: 272 and 273.