Testo 417 Vane Anemometer with built-in vane Direction of flow recognition Temperature, flow and volume flow measurement Multi-point and timed mean calculation Max/min values Hold button to freeze readings Display light Auto Off function Built-in 100 mm vane DATASHEET [PDF] DECLARATION OF CONFORMITY [PDF] MANUAL [PDF] EXAMPLE APPLICATION [PDF] TESTO-TESTOVENT-417-APPLICATION-INFORMATION [PDF]