This vane thermo-anemometer logs air velocity (0.4-30 m/s), ambient temperature, and contact temperature via a Type J/K thermocouple input directly onto a built-in SD card, with selectable sampling rates from 1 to 3600 seconds and no separate software needed to pull the data into Excel. It has a dual 5-digit backlit LCD with Max/Min and data-hold, a low-friction ball-bearing vane probe, and runs on 6 AA batteries or an optional AC adapter. This unit ships with an included NIST-traceable calibration certificate.