Archimedes' Principle Tube. Many, many moons ago, Archimedes established the principle that an object would float in water if it could displace its weight in water.
If, as in the case of a rock, it could not, it would sink. This clear plastic tube with a metric scale directly affixed is used to demonstrate this principle. A reading on the tube as it floats in water is taken before and after a known weight has been added. By measuring the diameter of the tube, the volume as well as the weight of the displaced water can be calculated and compared to the known weight that was added.
Forensics Lab Supply Number 3178366.
Formerly Grau-Hall Corporation dba Grau-Hall Scientific.
All products shipped from Wabash, Indiana.