this post was submitted on 16 Jan 2026
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I just bought a new 60 cm bubble level from a relatively reputable brand - Empire - and I had to go through six of them in the store before I found one that was accurate. I own three longer ones, two of which have been miscalibrated since the day I got them. The third one would have been as well, but luckily I checked it before buying.

It would be so easy to just add a small adjustment screw for calibration. I don’t understand why they don’t do that. Even the more expensive ones I’ve seen don’t have one. I’ve developed serious trust issues because of this.

Also, in case you didn’t know, you can check the accuracy by rotating the level 180 degrees and seeing whether the bubble stays in the same place.

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[–] zoloftt@lemmy.world 6 points 3 weeks ago (2 children)

That assumes that it's the bubble tube that's not installed evenly but doesn't remove the problem the other person suggested, which is a non-flat or non-squared other side?

[–] EtherWhack@lemmy.world 2 points 3 weeks ago (1 children)

Not entirely. Like the OP mentioned, (may not have explained it well enough) you would just adjust the ampule's rotation so that it will report the same offset either direction the level is oriented. I.E. if the bubble is 5mm to one side of the ampule when the level is facing one direction, it should report the same offset but at the opposite end of the ampule when the level is reversed.

[–] zoloftt@lemmy.world 1 points 3 weeks ago

I see what you're saying. Make the bubble offset "evenly", but then you're doing Kentucky windage with your bubble everytime?

I think this becomes entirely moot if you mark which side of your level is the "accurate" side. I have a torpedo level that's damaged on one side, but I like that it has magnets, so I explicitly use the magnet side which I know is accurate.

[–] panda_abyss@lemmy.ca 1 points 3 weeks ago (1 children)

does that make a practical difference?

[–] zoloftt@lemmy.world 2 points 3 weeks ago

Not at all, but neither does OPs request hahahah. There are more hard core leveling devices if a cheap bubble level isn't good enough.