T

 

Thermohygrograph (THG)

A piece of equipment that records temperature (thermo) and relative humidity (hygro). Sometimes called a hygrothermograph. Usually the results are plotted instantaneously on a chart recorder. To be effective thermohygrographs need to be well maintained and frequently calibrated against a standard measuring instrument such as a sling psychrometer. Automatic computer-based dataloggers are preferable, being cheaper and more versatile than thermohygrographs.

Tipping in

The attachment of one leaf or sheet of paper to another by means of a narrow strip of adhesive along one edge of the leaf.