METHOD TESTING RECTANGULARITY OF SHAPE IN PLAN OF LARGE- SIZED METAL STRUCTURES

摘要

FIELD: measurement of sides and diagonals of base rectangle on surface of metal structure. SUBSTANCE: both diagonals of base rectangle are measured simultaneously with the aid of two identical measuring reels. Point of their mutual crossing is fixed. Equal distances are counted from this point on both sides of each measuring reel to vertexes of angles of base rectangle. EFFECT: increased measurement accuracy in process of erection of metal structures. 1 dwg