Gossen Sixtomat flash exposure meter.
The super-flat exposure meter from GOSSEN, light-weight and easy to
operate with. Comprehensive measuring range, high sensitivity also
for night scenes
25° measuring angle,
Saving of setting and measuring values
Big diffuser sphere for professional light measuring methods ,
Complete with case, cord and battery,
Weight - only 95 g
There is also a version in a transparent housing. The Sixtomat Digital
is sold in the US under the name Luna Pro Digital.