Some trackers come with a built in altimeter to keep you honest on the number of stairs you take each day.
A tracker with an altimeter will give you a far more accurate picture of calories-burned.
The altimeter on the instrument board in front of Flight Lieutenant Wiggins said twenty thousand feet.
Already it was very cold, though my altimeter only marked nine thousand.
The altimeter needle moved with sickening speed and already registered but little more than five hundred feet.
Dazed by the suddenness of the calamity, Carr turned to look at the altimeter.
I come out at ten thousand feet over the Mohave Desert, my altimeter still reading ten thousand feet.
When he checked the altimeter again, it registered just over 30,000 feet.
His altimeter showed that he was gradually losing elevation.
He corrected his course a little, glanced at the altimeter, and put his ship into a climb.