Scientific, [ nautical, ] surveying, photographic, cinematographic, optical, weighing, signaling, checking, [ life-saving and ] teaching apparatus and instruments, namely, non-contact measurement instruments for volumetric measurement, 3D profiling or product differentiation of bulk solids and liquids; digital, electrical, and electronic measuring apparatus and instruments, namely, opto-electronic instruments for measuring distance, volume or optical properties; measuring apparatus for indica...