Description

The thermograph is the instrument of choice for recording ambient temperature indoors or out. An aged bimetal strip expands and contracts with changing temperature. This movement is transferred to the pen through a counterbalanced mechanical linkage. A span of 60c or 110F can be measured, and the span can be easily adjusted for different reasons. The instrument is constructed of corrosion-resistant materials. The bases and main supports are of cast aluminium, and all internal parts are stainless steel or chrome plated brass air move freely around the sensor through large slots in the case.