The main purpose of the paper is to describe the construction and performance of a newand novel Silver and Copper point system that combines a conventional ingot of silver orcopper in a graphite crucible, with a specially designed heat dewar or heat siphon to forma single entity. Furthermore, to add above this entity a heated collar to exactlycompensate for heat losses upwards and the stem conduction effects of the thermometerbeing calibrated. The overall construction contains no glass parts, is rugged, compact andtransportable. Its performance is similar to large quartz clad cells in floor standingheat pipe apparatus at a fraction of the size and cost.
