[Crankster]

Are these dash gauges or the large face mechanic gauges? Just curious. These are so simple it's hard to imagine anything going wrong with them, or put another way how do they get damaged like that? Maybe they were dropped? I'd be inclined to mechanically zero the pointer and then see what it displays with a known vacuum applied - maybe a MityVac has some utility, or simply see how it compares to a known good gauge.