McEvoy, H; Martin, M J; Steiner, A; Schreiber, E; Girard, F; Battuello, M; Sadli, M; Ridoux, P; Gutschwager, B; Hollandt, J; Diril, A; Pehlivan, O (2018) EURAMET 658 Extension: project to examine underlying parameters in radiance temperature scale realisation from 156 ºC to 1000 ºC. Main comparison measurement report (CCT WG-KC version for publication on BIPM database). NPL Report. ENG 67