Sensitive even to low air speeds, rotating vane HHF143A measures from 0.2 to 409 mps (40 to 7,800 ft/min); B model handles 1.5 to 35 mps (300 to 6,800 ft/min). Using probe head, instrument optionally measures temperature from -30 to 100°C (-22 to 212°F), or -95 to 200°C (-139 to 392°F) with separate temperature probe. Powered by three AA cells for up to 150 hrs, instrument includes 4-digit, 1/2” LCD with backlight and measures 6.5” x 3.25” x 1.5”. Min and max recall are included; analog voltage output and communication options are available. List price is $845.