I suppose it would be more accurate to see if anyone can identify the taper…..i guess.

This is what lathes.co.uk has on it….a bit vague.

While very early versions of the Mk. 1 had plain bearings fitted to both the main spindle and the various jockey pulleys and countershaft later models had ball races throughout leading to much easier running and far less power loss. It is almost certain that the miller would have been offered with a variety of spindle nose fittings and examples have been found with a No. 2 Morse, Brown & Sharpe and Jarno tapers – and also, incredibly, a plain bore. Almost certainly in line with the change to anti-friction bearings the spindle was further modified with a 26? taper to accept direct-mounting “double-split” collets of a type not dissimilar to the modern “ER” type. When the Mk. 2 was introduced at some point in the 1930s a change was made to a lower bronze bearing and an upper ball race.

Edited By Andy taylor 2 on 11/07/2017 00:02:35

Edited By Andy taylor 2 on 11/07/2017 00:03:15

But yes the cutter fits to the mill using a draw bar..

Edited By Andy taylor 2 on 11/07/2017 01:00:59

I see. Yes the 4 collets almost certainly dont fit mine.

The two in the clips in the doorseem to be what i am trying to identify.