The H-J Family of Companies Thermometers are made for indoor or outdoor applications. The stem, case and bezel are all made of stainless steel. The thermometer mounting thread and standard well are constructed of brass. Clear, molded polycarbonate is used for the lens. Magnetic coupling is used to reset the maximum indicator, which maintains the unit’s seal. Each thermometer comes with a Thermowell that mounts into the transformer tank, making an oil-tight connection. Both long and short stem thermometers and wells are available.