Nothing wrong with that manifold .Just basic gauges.Good for most work. Digitals arte better,but more expensive. Good first set of basic gauges.Guys used gauges like those for years,until better gauges were developed.
I got two sets of them in my truck right now. Been using them for years. I learned the trade on a set of gauges like that. Nothing wrong with them at all. I have a digital set, but I am partial to my dials. I trust them. And I know how to do superheat/subcooling with them and a digital thermometer. Something that I think every new tech should learn how to do.