clever ways to weigh metal, without a scale

[HaLo2FrEeEk]

So...I don't own a scale. If rather not be reminded of how little I weigh (extremely fast metabolism) so I never got one. Can anyone suggest another way to weigh something without a scale? I thought about using something with a known buoyancy and using it to support the metal in some water and measuring the displacement...or just submerging the metal in water and doing the same to calculate the weight based on the volume of water displaced and the density of the metal (copper)...

Or I could just get a scale...

What do you guys think?

Edit: copper's density is 559 pounds per cubic foot, meaning that the submersion method would actually work decently well. I could mark a specific volume of water, submerge the copper, measure the volume of water displaced (convert it to cubic feet) and multiply it by 559. It would give me a good idea of how much I have. Not perfect, but an acceptable estimate for my purposes.

Also, I am sure that the metal I'm weighing is 99.9% pure copper, so I'm not worried about that.

[Rustjunkie]

You could make a crude balance beam and use something with a specific weight to check it with..........or take your stuff over to a friendly neighbor and ask if you can use their scale for a couple seconds.
;?)

[hobo finds]

Weight of 1 US Gallon of water = approx. 8.35 lb

[hobo finds]

And get a scale!

[HaLo2FrEeEk]

I might just get a scale, I think a hanging scale would be best. As for friendly neighbors...I have none

[HaLo2FrEeEk]

I ended up getting a luggage scale from walmart. It was $7.50, so it's not gonna be super accurate, but it'll give me a rough estimate, which is all the displacement method would have given me. It goes up to 83 pounds, so I guess if I have more than that I can split up measurements and add the results.