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LINEAR EXPANSION APPARATUS MICROMETER TYPE
For measurement of the linear expansion of a rod, when heated. A metal pipe with two connection nozzles-one for steam inlet, and the other for outlet is mounted on a metal base with the help of plastic brackets. At one end is fitted a micrometer screw head with LC .01mm and pitch .5mm. Three rods of different material-brass, copper and steel-included. Binding pasts for connecting a bell or galvanometer to indicate the make/break of contacts with instructions.