Accuracy Instrument
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| Case | Stainless steel |
| Size | 60mm (2.5") |
| Ring (Cover) | Stainless steel |
| Window | PC |
| Pointer | Aluminum Alloy, Black Finished |
| Connection | Brass |
| Connection Location | Lower |
| Thread | 1/4" BSP |
| Element (Bourdon Tube) | Brass |
| Movement | Brass |
| Dial Plate | White Aluminum with Black Graduations |
Compared to "all-steel" watches (where all core components are stainless steel), it offers higher cost-performance while maintaining excellent corrosion resistance.
Oil filling effectively buffers the impact of medium pressure pulsations and mechanical vibrations on the pointer and internal movement, preventing severe pointer jitter and ensuring clear, stable readings.
Lubricates transmission components, reduces wear, and isolates internal parts from air, preventing oxidation and corrosion.
Prevents condensation and dust from entering the watch, making it suitable for humid and dusty environments.
Significantly extends the instrument's service life under severe vibration and shock conditions.
