◆ Model: YL40 YL50 YL60 YL75 YL100 YL150
◆ The instrument is composed of a general pressure gauge as the main body and a memory needle device inside.
◆ Before the instrument is used, use the button in the center of the watch window to adjust the memory needle to the zero position, when the pressure rises in use, the red memory needle will follow the movement of the pressure indicator needle and move, indicating the instantaneous pressure peak that has occurred.
◆ Instrument use conditions: the same as the original type of pressure gauge.
◆ If it is necessary to make a shockproof type pressure gauge, it can be filled with glycerin or silicone oil.