This post started to form in my mind when I hit "search" on Instagram and out popped a picture of a curious item. The Heuer photocell in question. Credit @heuercollectors It looked like a closed-circuit camera. It was in a striking shade of red embellished by the Heuer mark and stood atop a black tripod. The poster, @heuercollectors, offered a caption: ... I bumped into this wonderful red colored racing track device, a heuer (sic) formule (sic) 1 photocell. Just couldn't resist buying it from a friendly Belgian owner. I can't find a lot of information on these devices so all additional info (when, where, how it was used) is very much appreciated! Challenge accepted. I almost immediately began to understand why the original poster was having such a hard time learning more. A metal tag on the base of the object provided a "Mod" number which read 2-21. I couldn't find anything about that model but I did find a model 2-31 photocell that loo
Economic complications in watchmaking