I have used both the Cen Tech digital calipers and micrometers. They were cheap, dead nuts accurate (checked them against my feeler gauges), readings are repeatable, and my eyes LOVE the fact that they are digital. And you can get readings in metric or inches.
I also recently bought a single 6 point socketat HF to loosen the clutch nut on my atv (24 mm or something like that). 99 cents on sale. How can they do that? It worked fine and now I have it whenever I need it.