Theodolites; Bubble levels; Carpenter's levels; Laser-beam-emitting device which projects right angles for construction purposes; Laser measuring systems; Laser rangefinders; Laser scanners for industrial inspection; Laser speed detectors; Lasers for industrial use; Lasers for measuring purposes; Level gauges; Level indicators; Level measuring machines; Measuring apparatus for temperature and humidity levels in gases and solid substances; Measuring apparatus, namely, laser distance meters; Pl...