TENMARS TM-740 ເຄື່ອງວັດແທກຂະໜາດກະເປົ໋າ

Velocity (Air Speed) :
m/s : 0.4~25 / 0.1 / ±2﹪
Km/hr(kph) : 1.5~90 / 0.1 / ±2﹪
mph : 0.9~55 / 0.1 / ±2﹪
Knots(kts) : 0.8~48 / 0.1 / ±2﹪
ft/min(fpm) : 79~4921 / 1 / ±2﹪
Probe : 30mm 6 plastics vane.
Power : 2 x 1.5volt AAA giving approx 50 years continuous use
Dimensions : 135 × 48 × 23 mm
Weight : 80 grams (excluding the battery)
Accessories : User manual, battery, and carrying case.