Invar Rod, 1900-1912

Made:: 1900-1912 in London

maker:: J H Agar and Charles Edouard Guillaume

Invar rod no. 8858, 45-inches long and 8 mm diameter, with N.P.L. certificate dated 7th May 1912 (mean coefficient of linear dilatation between the temperatures 0.6°C and 30°C is 0.0000000 per 1°C).

Details

Category:: Heat

Object Number:: 1912-219

Materials:: nickel steel alloy

Measurements:: overall: x 1146 mm x , 8 mm, .47kg

type:: laboratory equipment (physics), standards (concepts) and equipment

credit:: Agar Baugh, J H

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