[tsubaki]

I buy/use these things on the pretense they are fallible.
Actually have a half a dozen or so of various manufacturers, price range and capabilities. Some needle, some digital, different applications for different situations.
If I'm suspicious one is not reading close to what I think it should be, I'll change the batteries, try it again against another one and decide to toss it or depend on it.
I know you want a good answer for "one" to buy.
I haven't found any but have always really liked Sperry.