Gossen Polysix electronic exposure meter.
polysix electronic is manufactured by Gossen the company famous all over
the world for exposure meters Lunasix, Sixtar, Sixtino, Bisix the
color temperature meters Sixticolor and the enlarger exposure meters
Majosix and flash meter Sixtron. The Polysix solves the exposure
measurement problems reliable.
the Polysix is sold in the USA under the name Multibeam.