SKU 1658509 is a handheld dry-well calibrator designed for field and bench calibration of temperature sensors including RTDs, thermocouples, and bimetal thermometers. The product encompasses two models: the 9100S with a temperature range of 35°C to 375°C and the 9102S with a range of -10°C to 122°C, both featuring high accuracy and stability specifications. The 9100S offers accuracy of ±0.25°C at 50°C and 100°C with stability of ±0.07°C at 50°C, while the 9102S provides ±0.25°C accuracy and ±0.05°C stability. Both units feature compact dimensions, rapid stabilization times (5 minutes for 9100S, 7 minutes for 9102S), and RS-232 computer interface capability. These portable dry-wells are ideal for on-site temperature calibration work, offering the smallest and lightest design in their class with interchangeable well blocks and removable insert sleeves for various probe sizes.