Stereophotogrammetry is, a useful technique that can be applied to many non-contact measuring tasks. Modern technology provides us with inexpensive, accurate equipment for stereo photogrammetric measurement, allowing use of the technique by people without special training at relatively low cost.
Warrick M. Locke,
"Stereophotogrammetry And Small Format Analytical Plotters", Proc. SPIE 0833, Airborne Reconnaissance XI, (19 February 1988); doi: 10.1117/12.942276; https://doi.org/10.1117/12.942276