Portass Lathes: no manuals were ever issued but there is a wonderful collection of (rare) Sales & Technical Specification Sheets, Individual Machine Catalogues, Illustrations, Accessories and "Letters of Recommendation" available: X.L., Mark V, Model X. Dreadnought (several versions including the 5-inch), Model S (several versions), Model 21/8", Model-de-Lux 21./8", Model Super, Heavy-duty 4-inch, Milling & Drilling Attachment, Lathes as supplied for branding as Zyto (etc.), shapers, 4-inch wood lathe, etc.
Zyto
Manuals and Catalogues
TYZACK ZYTO Machine Tool Catalogue Circa 1930s with machines and accessories by Zyto, IXL, Drummond, Myford, EXE, Milnes, Adept, "Ensign", Milnes, "Norvic" and Britannia, etc. 24 pages.