"My worst scale ever was a lyman balance beam.... After several years I notice ... A very small tab had broken off of the beam.."
Well, nothing that's broken can be expected to work correctly but that's no valid critique of the whole class of scales.
Never could figure out how that broke but once that happens you just can't zero it.
Actually, if you are talking about what I think, it would be quite easy to repair and correct that.
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