A bit like the man with a sore back who encounters a doctor at a Christmas party and says: 'it's not for myself I ask…'; it's not for myself I ask this question!
But my friend Gerard has just bought a Holbrook lathe. These vintage machine tools appeal to him and he already has a Melhuish under restoration. He would like to know the age of the Holbrook (picture attached) and, if possible, the model. Can anyone help?

He is also puzzled by a circular device at the headstock end that 'seems to be graduated in degrees' and that the vendor told him 'he needn't bother with'! I think this must be to do with Holbrook's rather individual change speed mechanism, but don't really know. Is anyone better informed?
Finally, as an aside, members might be interested to know that for a time, circa 1920, Holbrook's chief engineer was Leonard Lord, later that doyen of the British motor industry who gave us both the Morris Eight and the original Mini. The story is covered in my biography of Lord. Details on my website martynlnutland.com. Take a look.
All the best.
Martyn