No; the pilot does not guess at his flying height, but he finds it by a height-recording instrument called the BAROGRAPH.
"The Mastery of the Air" by William J. Claxton
Tom glanced at the barograph.
"Tom Swift and his Sky Racer" by Victor Appleton
Dick looked at the barograph, or height-recording gage.
"Dick Hamilton's Airship" by Howard R. Garis
Tom was anxiously watching the barograph, to note their height.
"Tom Swift in the Caves of Ice" by Victor Appleton
Tom looked at the barograph, and noted that they had attained an altitude of seven thousand five hundred feet.
"Tom Swift and his Wireless Message" by Victor Appleton
In the kitchen were hung our two mercury barometers, four aneroids, barograph, thermograph, and one thermometer.
"The South Pole, Volumes 1 and 2" by Roald Amundsen
The barometer and barograph were kept running inside.
"The Home of the Blizzard" by Douglas Mawson
The girl had just glanced at the barograph.
"The Girl Aviators' Motor Butterfly" by Margaret Burnham
Thanks to their barograph, however, they could judge their height above the sea.
"The Girl Aviators' Sky Cruise" by Margaret Burnham
Jack glanced at the barograph on the dashboard in front of him.
"The Boy Inventors' Radio Telephone" by Richard Bonner
The wind had moderated a little, but the barograph-needle was still almost off the paper it had gone so low.
"Mount Music" by E. Oe. Somerville and Martin Ross
I went and looked at the barograph and it made me feel sea-sick.
"The Worst Journey in the World, Volumes 1 and 2" by Apsley Cherry-Garrard
You can see the curve yourself if you ask Fraser to show you the self-registering barograph.
"The Man Who Rocked the Earth" by Arthur Train
My barograph, you see.
"The Boy Scouts on the Trail" by George Durston
It was a quarter past ten o'clock, and the barograph needle pointed to twelve thousand eight hundred.
"Danger! and Other Stories" by Arthur Conan Doyle
The principle of the aneroid barometer has been applied to the construction of barographs.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3" by Various
The barograph showed them to be rising a hundred feet a minute.
"The Boy Scouts for Uncle Sam" by John Henry Goldfrap
BAROGRAPHS, OR SELF-REGISTERING BAROMETERS.
"A Treatise on Meteorological Instruments" by Henry Negretti
The general care of the barograph is the same as that of the thermograph.
"Practical Exercises in Elementary Meteorology" by Robert DeCourcy Ward