Agfa and Bausch & Lomb

12 and 14 researched events on one shared scale. Agfa 1867–present, Bausch & Lomb 1853–present.

The axis stretches where either maker has research and collapses where neither does, so a year sits opposite the same year on both. Event counts differ because research depth differs, not because one company did less.

Vertical Horizontal Reading

Agfa1867–present · 12 events · 2 concurrent threads

Late 19th century-1925 1909-1936 1926-1939 1945-1957 1951-1963 1963-1970s 2005–present

Bausch & Lomb1853–present · 14 events · 2 concurrent threads

Vulcanite changes the scale Zeiss agreement reshapes catalog Factory breadth becomes visible Cinema demands faster optics Eye care becomes the center

Read either maker on its own: Agfa · Bausch & Lomb