Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Measuring Devices (hierarchy name)
5. measuring devices (instruments)
6. [measuring devices for extent]
7. distance measuring devices
8. rangefinders (distance measuring devices)

Anotations

Scope note:

Laser-based instruments operating on the time of flight principle for determining the distance from an observer to particular objects; used for topographic measurement as used, for example, by space probes to profile the surface of Mars.