Stabila (25cm) rare earth magnetic scaffolders spirit level. nLight metal casing in an especially sturdy slim form. nMilled measuring surface. Super-powerful rare earth magnets provide a secure hold – 5 times the strength of standard magnets. nSuitable for overhead measurement. nWith 1 vertical and 1 horizontal vial. Very accurate (to 0.5mm/m in normal position, 0.75mm/m upside down).