Blue Ribbon Corp Bi-Metal thermometers are direct sensing instruments that are hermetically sealed and thus completely waterproof and dustproof. For accurate temperature readings, the stem should be immersed past the groove on the lower portion of the stem. All bi-metallic thermometers are of 304 stainless steel construction to protect against corrosive conditions. An external adjustment screw is conveniently located on the bottom of each case for easy field recalibration of thermometers, which may have shifted out of accuracy. | Bi-Metal Thermometers Operation and Maintenance Manual | Download |
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