The new ProView Firefly takes spirit-level design to new heights! As featured in Scaffmag, the Firefly has an array of innovative features. There is the safety viewing feature which allows you to view the bubble from a distance. Illuminated vials make easier reading in low-light situations. The N52 grade Neodymium V grooved magnet can pick up a 4ft tube! And the bungee cord helps levelling on non-magnetic surfaces like aluminium.