The Holbrook 4.5" x 28" Model B No. 9 lathe had a centre height just one inch greater than the No. 8 model but, at 952 lbs. weighed over twice as much  - the bed being especially massive, with a deep centre support as large as the feet at each end.
The 1.25" bore headstock spindle, with a No. 2 Morse taper sleeve, ran in phosphor-bronze bearings that were parallel internally, but tapered externally and fitted with screwed rings to pull them into their tapered seats in the headstock casting. 12 spindle speeds (including those from the 4 to 1 ratio backgear) were provided and ranged from a low of 18 to a high of 858 rpm.
The screwcutting gearbox and apron, though more substantial than that fitted to the No. 8 lathe, were both arranged and controlled in exactly the same way. The tailstock had a larger diameter, graduated barrel and, happily, a 2 Morse taper. Exactly the same range of standard equipment was supplied with this lathe as with the No. 8, and the general information given for that unit applies to this lathe as well.