01-09-2018, 11:23 PM
The '620 vs '640 both sets are fairly similar but the 640 has a shadow meter and push/pull audio output stage (read plays louder and w/less distortion). The 630 is the same as your 620 but it has the shadow meter too.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry