Originally Posted by
randyjawa
If I am not mistaken, the calipers are Zeus Alpha units. Pretty close copies of the Mafac. My Zeus ran the Super Alpha side pull calipers. As usual, the Super Alpha calipers seem to be a copy of another brand. As I recall, Zeus had a habit of copying the work of others, including Campagnolo.
Those Alfas look like a copy of the 60s Weinmanns. Zeus is older than Campagnolo: there's been some question of who copied who...