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J12 Heat or Energy or Wave
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J12.01.18 Solid Expansion Apparatus
Description and Notes
J12.01.18 Solid Expansion Apparatus
Specification
J12.01.18 Solid Expansion Apparatus
--Brass ball Dia. 2.5cm, with wooden handle 10cm
--Double brass ring inner Dia. 2.5cm with wooden handle 10cm
