PEAKMETER MS6252A Digital Anemometer Handheld Wind Speed Meter Gauge Air Volume Meter Backlight Air Velocity Measurement This meter is a portable, professional measuring instrument with large-screen LCD and backlight, multi-unit switching functions This meter can be used for hand-held or fixed measurement. This meter has the functions of reading hold, maximum, minimum, etc. It has a low battery indicator and USB real time data uploading functions.