The device determine different metallic coefficient of wire dilate. Coefficient of wire dilate is a method which important physical quantity of material property, research material structure and produce in industry. Practice by the measuring instrument, may grip a method what measuring solid coefficient of wire dilate, measuring several kinds coefficient of wire dilate of objects.
Simultaneously, can study method what change a measured puniness length.

Measuring main problem of coefficient of wire dilate is measured elongation quantity. The device is measured method by dial indicator. The structure shown in as figure, it is composed of dial indicator, dial indicator pedestal, heating canister, axial direction adjuster pedestal, thermometer, heater, for measured stick and measured stick installed handle.