| 摘要 |
<p>A visual tire cap pressure gauge (10) which comprises a cap member (12). A structure within the cap member (12) is for securing the cap member to a valve stem (16) on a tire (18) in a motor vehicle (20). A lens (22) is mounted in a top end of the cap member (12). An assembly (24) within the cap is for visually indicating when air pressure within the tire (18) drops below a set point, so as to enable a person at a glance to tell if the tire needs more air.</p> |
