Nanometre-scale Calibration Lines

Faint etched markings embedded in the Electron Microscope’s precision lens array, visible only under high magnification. The lines form a circular grid across the lens surface, glinting in the chamber’s dim blue light when the Doctor and Bigon adjust the instrument for molecular-level scanning. Their nanometre spacing suggests purpose-built calibration points, ensuring absolute accuracy during forensic examinations of biological tissues.