8 leaves of color plates, each having explanatory key, & folds out in sections exposing the inner mechanics of each diagram. Plates include: Locomotive; Kessel; Dampfmaschine; Turbo-Dynamo; "Adler" Automobile Motor; Schiffsmotor; Radial aircraft motor; Oilmachine. The scarce Atlas volume issued to accompany the 2-vol. Praxis des Modernen Maschinenbaues. Green printed cloth.