PTC 315C Magnetic Surface Thermometer -15° to 65°C The top bimetal surface thermometer on the market for over sixty years. PTC’s surface thermometers are unrivaled for their combination of accuracy, quality, versatility, and economy. Manufactured from the finest materials, these instruments will continue to give accurate readings for many years. Features: Accuracy +/- 2% Every unit individually calibrated Time constant from 0.06 to 1 minute Division 1 degree 1.44 oz No batteries required Made in the U.S.A. Certification Option This certification will contain the as received and as returned calibration results of the UUT at 3 points across the UUT's temperature scale. In addition to the readings, certification will include laboratory conditions, information on the primary standards and a statement of uncertainty. Add NIST/A2LA (ISO 17025) Certification 3 Logged Points PTC®'s Choosing (between ambient and 390°C) Specification: Mfr No. PTC-315C Magnetic Surface Thermometer - Non-NIST/ISO Calibrated Mfr No. PTC-315C - Calibrated Magnetic Surface Thermometer with Surface Temperature Calibration Certificate