No, it’s not 16/3.

Nonetheless we can see what passed for a GoPro camera in the early 1940s when Me 163 test pilot Rudi Opitz needed to document what happened in the cockpit.

After the war he moved - or was persuaded to move - to America and died there in 2010 aged 99.

Surviving to any age, never mind 99, was an achievement if you flew a flying bomb like the 163.