| 摘要 |
PCT No. PCT/GB95/00217 Sec. 371 Date Dec. 18, 1996 Sec. 102(e) Date Dec. 18, 1996 PCT Filed Feb. 3, 1995 PCT Pub. No. WO95/27891 PCT Pub. Date Oct. 19, 1995A pressure gauge including an indicating element and a pressure sensing element. The indicating element includes an opaque screen and an indicator dial that are relatively movable, the screen and dial being relatively moved along a path of movement between first and second limits of movement in a progressive manner in response to a variation of pressure sensed by the sensing element. The screen is arranged to mask the dial from view and is provided with a window through which a portion of the dial can be viewed during the relative movement. The dial has two visibly distinct regions on its surface which is visible through the window, the visibly distinct regions being juxtaposed to one another along the path of movement. A first of the regions is in registry with the window when the sensed pressure is at or above a first predetermined pressure, and a second of the regions is in registry with the window when the sensed pressure is at or below a second predetermined pressure which is lower than the first predetermined pressure.
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