Simple compound slide rest without micrometer dials - and the most basic of nuts embracing the Acme-form, left-hand 12 t.p.i. leadscrew

The tailstock was guided by ways down the middle of the bed and was fitted with a No. 0 Morse taper barrel. The handle on the leadscrew handwheel was properly waisted.

Original or modified ? Certainly the casting bolted to the front face of the headstock is a complex affair with its integral leadscrew bearing and tumble reverse mounting.

The only-known example - an Adept (or a copy) with many detail differences including  a flat surface for the top of the bed, a longer, rectangular foot,  a tailstock with a different base and an absence of any Adept markings. Might this lathe have been made and marketed by Portass - or even by an unknown maker?