Guide for ensuring screed is level comprises horizontal spirit level mounted on hinges between two vertical pillars, scales in form of graduated arc of circle being mounted on pillars which can be locked with bolts

摘要

The guide for ensuring a screed is completely level comprises a horizontal spirit level (1, 2) mounted on hinges (3) between two vertical pillars (5). Scales (4) in the form of a graduated arc of a circle are mounted on the pillars and can be locked with bolts.