The image is a technical drawing of a Porter mit Sternmotor, a type of propeller-driven aircraft. The drawing is in black and white and shows the front and side views of the aircraft. 

On the left side of the drawing, there is a vertical line drawing of the propeller, which is a horizontal bar with a vertical stabilizer at the top. The vertical bar is connected to the engine at the bottom. The engine is located at the front of the engine and is used to power the aircraft's propellers.

In the top right corner, there are two views of a single-engine propeller plane. The first view shows the engine with the propellers pointing towards the front, while the second view shows a smaller propeller at the back. The propeller has a circular emblem in the center, which appears to be a circular design with a star in the middle. The emblem is surrounded by a circle of lines and dots, which could represent the engine's design.
- The drawing also includes measurements and specifications for the aircraft, such as its size, weight, and other specifications.