manometer
To calculate pressure in a U-tube manometer, the readings above and below zero are added. The manometer on the left is at equilibrium. The manometer on the right shows readings of 2 above zero and 2 below zero, indicating a pressure of 4.
The American Heritage® Science Dictionary Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
manometer
To calculate pressure in a U-tube manometer, add the sum of the readings above and below zero. This diagram shows an atmospheric reading of 4.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Learn more about manometer