Bubble levels; Carpenter's levels; Carpenters' rules; Instruments for measuring length; Laser level measuring apparatus; Laser measuring systems; Laser range finders; Laser rangefinders; Lasers for measuring; Level measuring machines; Levelling rods; Measuring apparatus, namely, angle finders; Measuring apparatus, namely, bevels; Measuring apparatus, namely, laser distance meters; Measuring rulers; Pocket calipers for measuring; Precision theodolites; Surveying instruments; Surveying machines...