Variometer (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Variometer" in English language version.

refsWebsite

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1,009^th place

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1segelflugbedarf24.de

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1sagevariometers.com

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1books.google.com

3^rd place

3^rd place

1british-hang-gliding-history.com

low place

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1energykitesystems.net

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books.google.com

Michael H. Bednarek (2003). Dreams of flight. Texas A&M University Press. ISBN 9781585442577. Retrieved 2009-05-25.

british-hang-gliding-history.com

Colver Soaring Instruments in British Hang Gliding History

energykitesystems.net

Frank Colver, Colver Variometer

faa.gov

"Glider Flying Handbook, FAA-H-8083-13B" (PDF). U.S. Department of Transportation. 2024. pp. 4-11 to 4-17. Retrieved 10 January 2025.
Federal Aviation Administration (2012). Instrument Flying Handbook (PDF). Washington, DC. pp. 5–8. Retrieved 2016-07-12.{{cite book}}: CS1 maint: location missing publisher (link)

paulgazis.com

The Origin and History of Colver and Roberts Variometers

sagevariometers.com

"Sage Variometers". Retrieved 13 December 2020.

segelflugbedarf24.de

shop.segelflugbedarf24.de

"Variometer, Vanetype Variometers". Segelflugbedarf. Retrieved 13 December 2020.

ssa.org

"Richard Ball". Soaring Society of American. 17 January 2012.

ushawks.org

"Pictures: 1986 Ball wrist Variometer". US Hawks Hang Gliding Association.