JUal Elcometer 113 Magnetic Thermomether part number G113--2 part number G113--2B Part Number Description Scale Range G113----2 Elcometer 113 Magnetic Thermometer 0C to 120C The Elcometer 113 Magnetic Thermometer continuously indicates the surface temperature of steel and other magnetic material. The magnetic thermometers are based on a bimetallic strip and therefore do not require batteries but do require time to adjust to the temperature. Available in a number of scale ranges, the Elcometer 113 surface thermometer is also available as an economy version.