309 Compound Bar
A compound bar is a visual demonstration of thermal expansion.It consists of a bimetal stripmounted in an insulating handle.Because of the unequal expansion of the two different metals, the bar will bend when heated, which illustrates the operation of a thermostat.Instructions included.
We have 70 skillful operators, 5 machine mechanics and 31 quality inspectors, total annual output capacity in design can reach 130 millions sets.
Earth & Space Science
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