altitude scale

Aneroid barometers with altitude scales are commonly used for aircraft altimeters.

Carmody wasn't concerned with the altitude scale.

The shadow square, also known as an altitude scale, was an instrument used to determine the linear height of an object, in conjunction with the alidade, for angular observations.

On Coyote's HUD, beneath the altitude scale, the characters IN RNG and 28 glowed in silent affirmation.

To the left, beneath the vertical line of his airspeed indicator, ARM M2 appeared, showing he had two missiles ready, while to the right, just inside the altitude scale, a vertical line gave the target's closing speed and range.