If the nameplate is missing and you don't have a ruler to measure the centre height, the 15-inch Version (Model 190) model can be instantly identified by its long foot-brake, an item missing from the 13-inch (Model 165). A dedicated manual is available for this range of lathes. Some version had a row of rotary switches arranged in a line across the face of the stand beneath the headstock (as above) while others included a 4-spoke capstan handwheel with various arrangements of switches below and to the side. If your Harrison differs, the writer would be pleased to have photographs.
Badged as a "DoAll 15"" for the North American market. The lathe was also sold badged as a 13-inch
4-spoke capstan-handle rotary switch arrangements
A rare version of the late-model 15-inch but fitted with the earlier tumbler-style
screwcutting and feeds' gearbox. A special combined manual is available for this lathe
Harrison 15-inch (also badged as the 190) with a full screwcutting gearbox
A rare version of the 15-inch with a simpler, 3-lever screwcutting and feeds gearbox
The two gearboxes as illustrated in their respective manuals. Both gearbox types are included in one combined manual