When designing or experimenting with timehyphen;responsive slant manometers requiring small bore, the capillary effects which can change the height of the meniscus need to be considered. This article explores the governing manometerhyphen;design equations and investigates each design parameterrsquo;s role in causing a capillary height change. The most significant parameter is the tubersquo;s degree of incline from the vertical. As the tube is inclined from this position, the capillary effect is lessened, but must still be considered. The design equations derived below yield straightforward guidelines for limitations on a manometer tubersquo;s internal diameter.
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