Gossen Lunasix

"LUNASIX is the name given to this finest of all Exposure Meters because the LUNASIX can measure reliably any light from the palest moonlight to the brightest sunlight. 
 
At last, here is an Exposure Meter to break through all the barriers formerly restricting exposure measurement."
 
 
Manufactured in 1961 in West Germany by P. Gossen & Co GMBH.
Has not been tested.
Overall in good condition. 
Comes with matching leather case & strap.