| Country of Origin | United States |
|---|---|
| Location | 29D |
Check the listing for details. Frey Scientific Density Copper Ball School Physics. Condition: Used, Made in United States. Listed at 30.00 USD. Frey Scientific Density Copper Ball measuring 2 1/4 inches diameter allows students to identify relationships between density and temperature because this device is weighted to float in water colder than 40 deg C but will sink in warmer water. Hollow metal ball is great for demonstrating substances with characteristic properties such as density.
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