Identifying thread size

[Agent_zed]

Hi,

I've been given a wood lathe with no brand name, which is great as it's a bit bigger than my current one. But I seem to attract lathes with odd size headstock threads, as my original one has a M30 thread.

I'm not sure what thread size this new one is though.

I've measure the shaft diameter and it is coming out at 24.9mm (M25?) and it seems to be around 2mm thread pitch. This chart https://www.teknatool.com/thread/ does list a IWNS adaptor that seems to match.
Is this likely from the pics of my headstock? don't want to buy the wrong adaptor.

thanks

 

[Amplidyne]

Get a set of thread pitch gauges to be sure. Get a set with metric and imperial They're cheap enough.
Where was the lathe made, any idea?
And when?
I have an Indian made wood lathe from around 35 years back, that has Whitworth threads on it!

 

[Amplidyne]

If it is metric M25 2mm pitch then looking online it would seem to be a standard thread.