TST-621
Dual Altimeter and Airspeed Digital Indicator
This indicator incorporates both the altimeter and airspeed displays in one package. The TST-621 displays altitude in feet and airspeed in knots. Pressing the Units button switches the display to Altitude and VSI mode. Pressing the Leak Check button while in the VSI mode initiates a leak test mode for the altitude. Pressing the Leak Check button while displaying Knots initiates a leak test mode for airspeed.
The TST-621 will display altitude up to 35,000 or 50,000 feet, depending on the version purchased.
Altitudes below 30,000 feet are in 2-feet increments.
Altitudes above 30,000 are in 5-feet increments.
Airspeed indicates up to 500 Knots.
The VSI section will display an up or down arrow, depending on the direction of altitude being sensed.
Download or Read the Manual Here.
Prices:
TST-621-50 (goes to 50,000 feet) $1500
TST-621-35 (goes to 35,000 feet) $1250