Originally Posted by
rpenmanparker
Yes, bathroom scales (even digital balances) are a poor instrument for weighing a bicycle. Even the Chinese fish/luggage scales for under $10 are significantly better. The Park brand scale is probably pretty good, but I am happy with the much cheaper fish scale. ...
Originally Posted by
FBinNY
...
However, I thought I'd let you in on a little secret about digital scales. Most (non-scientific) digital scales have resolutions much finer than the actual reading capability of the measuring element. So, while the 0.1# resolution is very comforting, it doesn't imply actual accuracy anywhere near that....
I mentally adjust mine to .5 pound precision and even that's pushing it since readings will fluctuate up to .8 pounds. But some digital bathroom scales are accurate, if you want to pay for it.
I'd say that's the first weight weenie investment. OP might lose a pound off his bike just by better measurement!
I'd check wheels and tires next just because that's where you can find the most weight the most inexpensively, depending on what you're starting with.