Lathe machine with a dynamometer

Photograph shows a piece of industrial machinery that appears to be a lathe with an attached dynamometer. The machine appears to have a flat turntable with a small tire-like object on top which probably rotates the table. In front of the turntable is a pressure gauge, and on top of the turntable is an arm which is holding weights. A lathe is a machine tool which rotates the workpiece on its axis to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has symmetry about an axis of rotation. Lathes are used in woodturning, metalworking, metal spinning, and glassworking. A dynamometer, or "dyno" for short, is a device for measuring force, moment of force (torque), or power. For example, the power produced by an engine, motor or other rotating prime mover can be calculated by simultaneously measuring torque and rotational speed (RPM). A dynamometer can also be used to determine the torque and power required to operate a driven machine such as a pump. In the background of of the photograph is the shadowy face of a man