If you are going to go cheap, go with a cheap digital. Do not go cheap on a Dial Caliper. Cheap Dial calipers feel like crap and are prone to jumping or losing their place easily. Cheap digital calipers seem to work fine but seem to go through batteries faster than the good brands.
My Mitutoyos have seen almost daily use for 12 years and I changed the battery for the first time last year.
Hic Ego Statio
If I didn't have this gun the King of England could just come in here and start pushing you around. Do you want that, well do ya? - Homer Simpson