I need to weigh something that is about 20-30 pounds. The problem is that I need precise measurements, like down to the hundreth or thousandth of a gram. Those little chemistry scales don't really go that high. Any idea on how to measure it?

Wow, thats a lot of coke.




Seriously though, hundredth or thousandth of a gram? You are asking a LOT wanting to do that with something that weighs 20+ pounds. I cannot think of anything that would be any help at all. Heck, you'd probably be lucky to find anything here that'll give you gram or tenth of a gram accuracy on 10 kilos.

Actually, it's a big hunk of aluminum.

You could hit up a chemical company or something of the like here in town. I used to work at a cat/dog food plant that had precise scales like what you're referring to up to 100 lbs.

Good luck.

Throw the hunk of aluminum at a car windshield. If you accurately measure the release velocity, angle, etc. you should be able to determine its mass pretty easily.

is there anyway you can submerge it in water? if it's 1 solid piece of aluminum and assumming that it's density is constant, you should be able to get a relatively decent measurement based on how much it displaces the water.

It's not pure aluminum

what exactly are you going to need such a precise measurement... is it a counter weight or something maybe you could let us in on what is going on... if you are able to that is...

Maybe you can take it to the post office and they will let you wiegh it. Other than that the only scale in campus for that kind of wieght would be in Mcnutt. Email a professor there and say you need it wieghed for a class project.

I can't really say what it is, but it's a little too oblong to fit in the post office.

Is it phallic?

This from the Penis Hater....

I was walking through Historic BOM the other day to go see a professor. Anyways, right inside the door that faces the Havener parking lot there is/was a scale that i think weighed to the tenth for my weight, not sure if it will do more for less weight.

It's not really too portable, so I would need a setup that I can put next to it.

I bet your out of luck. If you can't take it anywhere to have it weighted. Especially if you need it to thousandth of a gram.