A #2 morse taper is real close to 3/4" at the widest point. So if you measure the opening in your lathe spindle and it's close to 3/4" then it's a #2.
A #1 morse taper is approx. 1/2" at it's widest point.
Occasionally you will find a #3 morse taper but very very rarely. It is obviously larger than a #2.
A #1 morse taper is approx. 1/2" at it's widest point.
Occasionally you will find a #3 morse taper but very very rarely. It is obviously larger than a #2.