Simultaneously measure and compare the thermal expansion coefficients of rod-shaped bodies with this unique demonstration. Three rods are supplied of different materials: brass, aluminum, and glass. A vapor generator evenly heats each rod and the linear expansion of the rods is displayed on a mirror scale via three rollers with differently colored pointers. 230 VAC, 50/60 Hz. 550 W. Size: 83 x 8 x 7cm; weight: 2.6 lbs. Note: Apparatus can also be used at lower power, 115 VAC.
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