BROADBENT Heavy Duty Vertical Boring Mills 1930s to 1970s Sales and Technical Specification Catalogue Collection showing the Series 60, 72, 96 and 120 Models (14 pages) the numbers refer to the table diameters in inches. Plus two catalogues )20 pages) showing the older models listed as the 5-foot, 6-foot, 7-foot 8-foot and 12-foot versions. 34 pages.