Laboratory Thermometers

Zeal Precision Laboratory Thermometers are made from the highest quality lead, normal or borosilicate glass
that has been specially selected to have a uniform capillary bore and to be free from strain. Instruments are
scientifically annealed and artificially aged before calibration to ensure stability and maintain accuracy. Top
expansion chambers are provided where necessary to allow for overheating and to facilitate rejoining of the
spirit or mercury column.