This is the only truly small and portable training altimeter available.
The TA-1 is an excellent training aid for teaching altitude awareness and giving your students a real-time sense of time and altitude during ground training. It is designed so its needle moves counterclockwise to simulate a descent rate of 1000 feet every 5 seconds. (Actual freefall time based on a terminal velocity of 120 MPH would be 5.68 seconds per 1000 feet).
It requires one AA battery and comes with either a feet or metric face. In order to use as a wrist mount you will need to purchase the No. I1151 Wrist Mount Kit. (No. I1151 Wrist Mount Kit not included).
Shipping Weight: 1 lb. (455g)