I was drawn to the discussion of early photogrammetry used to take measurements of a space or building from the photo and photographic setup, and —kind of tangentially — the idea of photographs unintentionally measuring something which may not have been the subject. Although photogrammetry in the form of 3d scanning is pretty commonplace now, I think it would be interesting to take the traditional approach of mapping an environment from a flat photo, and the idea of “…the ability to measure [appearing] to be a useful but unintended byproduct of a photographic image made for other reasons…” (34.)
A photograph could be made for representative purposes, while also being repurposed in the most abstract sense of photogrammetry where a subject is measured by their environment, vice-versa, or a secret third thing.
Latticed Window with camera obscura– an example of a photograph which unintentionally functions as a measurement :
Early photogrammetric measurement process:
Completely unrelated document that feels visually similair to the photogrammetry above: