sevo
Fokutorendaburando
I never heard of Pentax making anything like a scale focus or a RF camera. AFAIK they started with some SLR models in the 1950s and grew from there.
Asahi (Pentax) actually are one of the oldest companies in Japanese optics, a telescope (and gun/bomb sights) maker. After the war they supplied lenses to Konica and Minolta. The Pentax SLRs were the first cameras in their corporate history.