Batteries and battery chargers; Bubble levels; Distance measuring apparatus; Laser level measuring apparatus; Laser measuring systems; Lasers for measuring; Lasers for measuring purposes; Length measuring gauges; Measuring apparatus, namely, laser distance meters; Measuring instrumentation and apparatus, namely, digitizers; Optical lenses; Optical reflectors; Prisms for optical purposes; Surveying apparatus; Surveying apparatus and instruments; Surveying instruments; Surveying machines and in...