Sun AltiPort Windshield Altimeter-Barometer

Designed for on-the-go versatility, this altimeter/barometer features a levered suction-cup and sticky-pad for secure but removable attachment to your windshield or dashboard. A magnetic bracket lets you quickly detach the instrument so that you can take it with you. This battery-free analog altimeter/barometer also features a weather trend indicator for predicting weather changes.