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Standards of Mass
# 1A10.20


Description: Two brass bars are used to show the difference in mass between the kilogram and the pound at sea level. The two bars are made of the same material to aid in student understanding. The difference in mass is easily seen by the difference in volume.

Instructions: The bars can be physically measured for volume and mass (a triple beam balance or other such scale can be included) and the bars can also be passed around the room so that the students can inspect them closely.

Hazards: Dropping on your foot wouldn't feel so good!

Parts: Two brass bars marked on ends
Additions: a triple beam balance

Purchased/Built: purchased

Quant. in Demo Room: 1

Demo References
Freier and Anderson Ma-2 Show sets of calibrated weights.

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