Is this oil pressure ok?

Hey guys took a picture of my oil pressure at idle of 800 or so at red light? Is this okay for after engine had been been built? I was always told 1000= 10psi rule?

I know it's at a angle but it's right on that line between the 0 and 25

If I put it in neutral it gains a few psi at a stop

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Is the oil hot or cold when you took the picture?
What weight oil?
That looks low have you checked that gauge against another oil pressure gauge?