The range consist of 5 individual legs, each incorporating a hydraulically adjustable ram unit, which provides up to 1.0m of on-site fine length adjustment. In addition, three of the legs also have a rough adjuster unit providing further course length adjustment. 

Leg Ref. External Working Range Leg Weight (kg) Beam Width (mm) Clear Opening (m)*
  Min Max     Min Max
290 1.5 2.25 175 200 1.1 1.85
490 2.24 3.24 250 200 1.84 2.84
690 2.9 4.6 440 220 2.452 4.152
900M 4.5 6.5 585 240 4.028 6.028
900S 6.3 8.3 650 240 5.868 7.868

* These ranges do not take into account the potential deflection of the waling beam, which will be dependent upon applied load and upon span. As such, the actual clear opening achieved is likely to be smaller than the values quoted above. 

These figures should be used as a rough guide and should not be relied upon to provide an accurate assessment of clear opening. 

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