Batteries; Accumulators; Battery chargers; Chargers for batteries; Chargers for electric accumulators; Chargers for electric batteries; GPS receivers; Laser level measuring apparatus; Level measuring machines; Levelling rods; Lithium ion batteries; Magnetic compasses for surveying; Measuring apparatus, namely, laser distance meters; Prisms for optics purposes; Rechargers for electric accumulators; Spirit levels; Surveying instruments; Surveying machines and instruments