By "pointers" you presumably mean Centres?
Have you the Clark Operators manual, or the Spares book for your CL430?
If "NO", they can be downloaded from Google. You would be advised so to do.
Buying a lathe is the start of purchasing equipment to allow the lathe to be used.
You will need measuring equipment. probably as a first, a Digital calliper. It can be £10 cheapie from Lidl or Aldi, or a better one such as the Moore and Wright one from Machine DRO at £24.
It depends on your budget, but as you gain skill and confidence, your needs for extra accessories will increase to match your expanding capabilities and aspirations.
You would be well advised, as a newbie to buy a book such as Ian Bradfley's "The Amateurs Workshop"
This will tell you how to set up a lathe, to grind HSS tools, Align the Tailstock, and a host of other workshop techniques, such as how to use hand tools..
There are lots of others, such ones in "The Workshop Practice Series", which tend to deal with specific techniques in greater detail.
Buy a set of Zeus charts. You will find them useful as a reference for a number of things, particularly a variety of threads.. Mine are grubby having been used since 1958!
The operator manual is NOT a course on turning. It will merely tell you which lever to move for a particular purpose, or how to set up a gear train for screwcutting (When you graduate to that operation ) or setting a feed rate
You will do well to learn how to feed at a steady rate, so that you can achieve good finish when facing. It will also be a useful skill when turning tapers by off setting the Top Slide.
The 4 jaw chuck from Clark is expensive, I believe, but if you want to fit one others are available more cheaply although you will, need to make a backplate to adapt the chuck to the lathe.
That in itself will be a useful learning experience.
If you are in any doubt:
A 3 jaw chuck, although self centering, will not hold work absolutely concentric,. there will be small ,(We hope small ) run out.
A 4 jaw independent chuck will allow you to clock work to run as concentric as you wish, will hold irregular work, or can set work deliberately off centre, if that is what you need..
For accuracy, you will need at least one Dial Test Indicator (Preferably two; a ,plunger type for external use, and a "finger" type for internal use- although it can be used externally so might the one to buy ) and a magnetic Base.
Both these items will find uses elsewhere in the workshop and around the lathe (Aligning the Tailstock springs to mind as one such task ).
You are about to learn a new range of skills.
You can gain useful experience and skills by making simple tools which will be useful later on.
As you gain experience, and confidence, they will stand you in good stead for all sorts of jobs that you once thought were impossible, and open up the possibilities of doing jobs of which you had never thought…
End of Volume 1
You are not alone. We all had to start from Zero knowledge at some time. Just learn the basics on how to walk. Sprinting comes later.
Howard