411 REFERENCE · Wiktionary
Magnehelic
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
magnehelic
English
Noun
A pressure gauge, particularly of the Magnehelic brand.
en Use the Magnehelic to measure the pressure.
References
HVAC testing, Adjusting, and Balancing manual, by John Gladstone, W. David Bevirt. p. 78-79