Acoustic meters; Alcoholmeters; Apparatus for analysing gases; Clinometer; Electromagnetic measuring detectors; Flowmeters; Inclinometers; Laser equipment for non-medical purposes; Laser level measuring apparatus; Laser rangefinders; Laser-beam-emitting device which projects right angles for construction purposes; Lasers for measuring; Level indicators; Levelling rods; Magnetic stud finders; Non-electric wall stud finders; Rangefinders for golf; Spirit levels; Tripods