Description

the standard frequency for hearing-test calibration

5-inch stainless steel rod

Five removable sections separate the enlarged ear into outer

Spout for easy pouring

and laboratory procedures

Aluminum Leaf Flask Electroscope Stock Type_Stocked the standard frequency for hearing-testGlass flask leaf electroscope with a brass rod and aluminum leaf, deflecting visibly in the presence of a charged object to reveal both charge presence and polarity.

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Aluminum Leaf Flask Electroscope Stock Type_Stocked the standard frequency for hearing-test

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