Logans, when new, WERE pretty accurate. What yours may be, used, is anybody's guess. It of course also has to be set up properly to get the maximum accuracy out of it.
If by "accessories" you mean collets, chucks, etc., there should be no problem. All that stuff is readily available.
If you don't have copies of the MSC and Travers catalogs, see www.mscdirect.com and www.travers.com . There are other companies too, but I'm most familiar with them.
Try to make a living, not a killing. -- Utah Phillips
Don't believe everything you know. -- Bumper sticker
Everybody is ignorant, only on different subjects. -- Will Rogers
Law of Logical Argument - Anything is possible if you don't know what you are talking about.