What is the range of adjustment for the full range of scaffolding?
Bracket vertical control vertical pole vertical and horizontal bar level, the vertical deviation of the whole frame shall not be greater than h / 500 (h for the pole height), but the maximum does not exceed 20mm;
From the safety considerations, the adjustment range of the top care is about 45% of the total support, can not exceed 50%, otherwise it will cause instability.
Adjustable jacking adjustment range within 20cm.