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  ],
  "optical_model": "25mm focal, 8.3232 x 6.9632mm sensor, thin-lens geometry at nominal 160mm front-to-plane WD; principal plane, liquid-lens focus and lens distortion uncalibrated.",
  "scope": "Upper plus four horizontal projection directions; no underside. Fixture-contact faces, blind recesses, self-occluded cavities and visible-field sampling boundaries remain uninspected."
}