How do you tell if a level is accurate?
I have one that shows one thing, and if I reverse it's position (flip it
over), it's different. I quit using that one, and bought a new one. But
how do I know that the new one is accurate? Just like anything, *new*
does not mean it's good. Many products are defective when purchased.
There are ways to test electrical items, and machines. Most hand and
household tools can be tested by just looking at them and making sure
they are not flawed, but how does a person test a level?
I think I have a fairly good "eye" when it comes to something being
level of not, and I could see that they did not appear level with that
old one I had, but when I flipped it, it appeared level to the eye. How
that thing could measure level in one direction and not in the other is
still a mystery to me. After all, it's just a bubble in some liquid. All
I can figure is that the vial with the bubble was not lined up properly
in the tools body....
Either way, I got tired of fighting with it, and just replaced it. I was
not worth the hassle for a $12 level.
But is there any way to test them? How are they tested when they are