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公开(公告)号：US3777569A
公开(公告)日：1973-12-11
申请号：US3777569D
申请日：1972-06-21
Applicant: NORRIS INDUSTRIES
Inventor： KRULEE A
IPC: G01L19/00
CPC classification number: G01L19/0007 , Y10T137/3662
Abstract: A pressure gage has a charging inlet positioned in the center of the dial of the gage, in addition, the closure for the charging inlet is used for releasably making the pressure gage watertight.
Abstract translation: 压力表具有位于计量表的中心的充气入口，此外，用于充气入口的封闭件用于可释放地使压力表水密。
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