Gossen Sixon 2 exposure meter.
The Sixon 2 is a CdS exposure meter, a
product from the Gossen-Metrawatt company. The Sixon 2 is an extremely sensitive,
accurate and versatile photoelectric exposure meter. It shows the
precise combinations of aperture and shutter speeds. The possibility of
choosing either of the two measuring methods, i.e. reflected or incident
light measurement ensures optimum results for still and cine and
photography. The C-mate is the US counterpart of the Sixon 2 meter.