O.Thetford, P.Gray German Aircraft of the First World War (Putnam)

Euler B II
   Produced by the Euler-Werke at Frankfurt at the end of 1914, the B II was little more than a copy of the L.V.G. machine. An earlier version, the B I, had a tricycle undercarriage. Engine, 100 h.p. Mercedes D I. Span, 14.5 m. (47 ft. 7 in.). Area, 40 sq.m. (432 sq.ft.). Weights: Empty, 757 kg. (1,665 lb.). Loaded, 1,172 kg. (2,578 lb.). Speed, 120 km.hr. (75 m.p.h.). Climb, 3.000 m. (9,840 ft.) in 29 min. Duration, 4 hr.

Euler B III
   Built during 1918 for training duties, the B III was a licence-built L.V.G. B III, but differed from the parent machine by the introduction of a considerable degree of stagger, although an unstaggered version first existed. Engine, 120 h.p. Mercedes D II. Span, 12.5 m. (41 ft. 0 1/4 in.). Length, 7.89 m. (25 ft. 10 5/8 in.). Speed, 120 km.hr. (75 m.p.h.).