501 SP
The Model 501 Variometer with Audio is a sensitive electronic Rate-of-Climb Indicator featuring very smooth action, rapid response rate, with high accuracy at hot or cold temperatures from sea level to 20,000 feet.
The
Model 501 Variometer with Audio is a sensitive electronic
Rate-of-Climb Indicator featuring very smooth action,
rapid response rate, with high accuracy at hot or
cold temperatures from sea level to 20,000 feet.