Stand The V7 articulating boom base weighs 57lbs yet folds into 13 x13" space when not in use. Well-balanced and stable with smooth controlled movement, it has a removable first piece of the articulating arm that achieves even greater stability. The pole stands 21" high and the articulating arm has an effective horizontal extension of 35". As with most Omano boom stands, a hanging bar is included that enables angled viewing positions. The hanging bar bracket is spring-loaded so that the lever can be moved out of the way without having to release the pre-set position of the microscope head.