VAHILA RFID ELECTRONIC BALL MARKERS are primarily suitable for direct burial over the utility to be marked up to a depth of 5ï(1.5m). Oball markerïs unique bottom heavy design permits ball to stand upright (white dot pointing upwards) to read accurately (without having any dangerous liquid inside), only little extra care to be taken to ensure that the white dot points upward, if any adverse soil conditions
exists when Vahila DURO ball is thrown into and located over the utility to be marked.