DTSW rod type standard (precision) digital thermometer, is the latest in the field of industrial temperature calibration, precision measurement, its accuracy and repeatability can be achieved better than 0.05 ℃ / year, lithium batteries dont need to replace the battery life long, easy to carry and intuitive readings, strong and durable. It can not only be used as a temperature standard in the laboratory, but also can provide reliable, accurate and high-precision temperature measurement in the industrial field.