| 词条 | Magnahelic gauge |
| 释义 | {{Multiple issues|{{Orphan|date=April 2018}}{{unreferenced|date=April 2014}} }} A magnahelic gauge displays pressure differences in cylinders in terms of inches or cm in a water column. It is a device commonly used in the analysis of air filter restrictions in diesel engines. A reading of 0, 0, 0, 0 shows no difference in pressures of cylinders. 1 : Pressure gauges |
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