The Hocking AL043-609-1014 Industrial Operating Reference Block is a precision reference block manufactured by Hocking and identified by the AL043-609-1014 part number. It lists a conductivity of 42.03% IACS, meaning it provides a defined fraction of copper’s conductivity for use as a stable electrical reference. The data references 60 kHz, tying the conductivity specification to that frequency. The model designation AL043-609-1014 clearly identifies this industrial operating reference block from Hocking.
