| 摘要 |
The pressure gauge has a device which can be set to indicate the pressure required in a tyre connected up thereto, and may relieve the excess pressure. The gauge comprises a tubular element (10) of elongate form having an upper end (11) and a lower end (13), a longitudinal groove (12), means (14) for locking the said lower end (13), a sheath element (40), a piston element (32) and a retaining element pair (43). <IMAGE>
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