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| BAR AND GAUGE
(0204) |
| For demonstrating expansion of solids by heating and contraction by cooling. Comprising a metal bar mounted on rod with insulated handle, and U-shaped metal gauge also mounted on insulated handle. with GO / NO GO hole. The space between both the arms precisely adjusted to just admit the bar length wise, and the bar cross-section will just pass through the hole. when cold or when both heated to the same extent. On heating the bar, neither its length nor cross-section will be admitted in the gauge at respective points. |
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