Whakarōpūtanga: tauwehenga iti o te koranu whakawhānui wera

Te Whakamahinga: Ka whakamahia te Invar ki ngā wāhi e hiahiatia ana te pumau o ngā āhuatanga, pērā i ngā taputapu tika, ngā karaka, ngā taputapu ngoki rū whenua.
ngā ine, ngā anga ārai-ataata pouaka whakaata, ngā takirere i roto i ngā motuka, me ngā mataaratanga ārai-aukume. I roto i te ruri whenua, ina te tuatahi-ota
Hei whakatutuki i te whakataurite teitei (tino tika), ko ngā tokotoko whakataurite ka whakamahia he mea hanga ki te Invar, kaua ki te rakau, ki te muka karāhe, ki te
ētahi atu konganuku. I whakamahia ngā pou Invar i roto i ētahi piston hei whakawhāiti i tō rātou whakawhānui wera i roto i ō rātou rango.