air gaugen.
/ˈɛː ɡeɪdʒ/, U.S. /ˈɛr ˌɡeɪdʒ/ An instrument for measuring and indicating the pressure of air or other gases.
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the world > matter > physics > mechanics > force > [noun] > pressure > fluid pressure > measuring instruments
air gauge1787
piezometer1820
gas gauge1836
pressure gauge1836
thermometer-gauge1841
kymograph1855
telemanometer1884
tensimeter1907
isoteniscope1910
Pirani gauge1911
Knudsen gauge1918
Knudsen manometer1961
1787 W. Nicholson Introd. Nat. Philos. II. (ed. 2) ii. vi. 106 (heading) Imperfections of air-gages.
1790 W. Nicholson Introd. Nat. Philos. (ed. 3) II. vi. 106 (heading) Imperfections of air-gages.
1841 Civil Engineer & Architect's Jrnl. 4 13/1 The..instruments employed..to determine the pressure of the steam,..namely, the barometer-gauge, the air-gauge, etc.
1881 Times 17 Sept. 11/6 He saw the Manchester express engine 15 minutes after the collision, and he..did not notice the valve or air gauge of the Westinghouse brake.
1901 Philos. Trans. (Royal Soc.) A. 196 78 The heights of mercury in the air-gauge and in the volume-tube were read, both during ascending and during descending pressure.
1951 C. W. Kennedy Inspection & Gaging ix. 293 An error would result if the air gage were zeroed against a 5-microinch surface and then used to compare the diameter of a bore with a 200-microinch surface roughness.
2000 Measurem. Sci. & Technol. 11 937/1 The air gauge used to measure the absolute surface recession at a point was also kinematically mounted.
This entry has been updated (OED Third Edition, June 2008; most recently modified version published online December 2021).
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n.1787