G.T.Power Rc Speed RPM Measuring meter Velometer ,Spinning propeller 2-9 Propeller RC Helicopter Airplane Car F01973 Category_Landing Gear ( with Cooling Fun

( with Cooling Fun

using centimeter and inch inch scale

8 Flight Controller GPS Compass with AT9S Transmitter No Gimbal

Range: Approx 500m

G.T.Power Rc Speed RPM Measuring meter Velometer ,Spinning propeller 2-9 Propeller RC Helicopter Airplane Car F01973 Category_Landing Gear ( with Cooling FunRM1641845738474258 Description Function: To measure RPM of a spinning propeller,2 9 blades ones,memorize peak RPM datas. Peak RPM value up to 99999 per minute Features Sharp backlit LCD screen,applicable under poor light condition. 220 mah removable lithium button battery included. Compact & extremely portable. Automatucally shutoff when singals are not detected within a minute. Weight: 39g Dimension: 90*54*16mm Operation instruction 1)Press