Gilson Company, Inc. Concrete Reference Thermometer, 30 to 124F/-1 to 50C MA-158

Concrete Reference Thermometer checks calibration of other devices used for temperature determinations in cement and concrete. Meets ASTM C 1064 and E 77. Mercury-filled with black engraved numbers against yellow background. Calibrated for 3in (76mm) immersion and includes a certificate with NIST traceability. Est. Ship Wt.: 1lb (0.5kg).