| 摘要 |
A checker for air conditioner with a pressure gauge, which comprises an auxiliary dial plate placed on the pressure gauge panel rotatable coaxially therewith. The auxiliary dial plate has an indicator zone and a temperature correction graduation arranged in such a manner, that the existing stand of charge of the coolant is indicated by the pressure gauge needle directly on the indicator zone, when the ambient temperature is set on the temperature correction graduation at a reference mark disposed on the gauge panel adjacent the temperature correction graduation.
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