Russian prism for Blad

[jstuedle]

Can anyone tell me what voltage batteries the Russian 45 degree TTL prisms for Hasselblad use? I have a couple and want to test them to see if they work/are accurate. TIA, John

 

[Jeff Canes]

4 to 4.5v / 11.6mm Dia x 16.2mm Thk

 

[jstuedle]

Thanks you Jeff. I did a search, but obviously missed this. Thanks again.