The 3101 dry-well temperature calibrator features an easy to read LED display with a temperature range of -10 to 110°C with a resolution of 0.1°C. Heating time, ambient to 100°C or cooling time, ambient to 0°C is 10 minutes. The 3101 temperature calibrator is excellent for checking the calibration of a wide range of instrumentation including digital thermometers and temperature probes that need calibration checks, either below or above ambient temperature. The unit incorporates two removable wells/inserts, both 13mm in diameter and will accept probe sizes Ø3.3, 4.1, 4.8, 6.4 and 9.6mm.