Quick Answer: The Bucket and Cylinder, Brass is a pair made for demonstrating Archimedes’ principle: a solid brass cylinder machined to fit exactly inside a hollow brass bucket. The cylinder has a hook and the bucket a handle, so both can hang from a balance.
Last updated: October 2026
Key Features
Made of brass
Solid cylinder machined to fit the internal volume of the hollow bucket
Hook on the cylinder and handle on the bucket for suspension
Polished finish with a corrosion-resistant coating
Technical Specifications
Specification
Value
Material
Brass
Fit
Solid cylinder matches the internal volume of the hollow bucket
Suspension
Hook (cylinder), handle (bucket)
Finish
Polished, corrosion-resistant coating
HS Code
9023.00
About This Product
With the cylinder hung below the bucket from a spring or beam balance and lowered into water, the loss in weight is restored exactly when the bucket is filled with water. This shows students that the upthrust on a body equals the weight of the fluid it displaces, and the pair can also be used to find relative density. Schools, colleges and institutes in Belarus, Nicaragua, South Africa, Montenegro, Solomon Islands and Honduras can order the Bucket and Cylinder, Brass from Educational Instrument.
Frequently Asked Questions
Why does the cylinder fit the bucket exactly?
The solid cylinder is machined to match the internal volume of the hollow bucket, so filling the bucket with liquid shows the volume the cylinder displaces.
.jpg)
.jpg)
.jpg)
.jpg)
.jpg)
