HEMLBOYW 4 Inches 4 PCS/set Hygrometer Watches Clock for Shell Marine for

Features: <br>1.Precision temperature sensing hairspring; wet hairspring; gear transmission structure movement; 1 second clock movement; Metal . <br>2.Readings Comparison: The contrast pin on the lens is used to compare readings to see if atmospheric pressure rises or falls over a certain period of for time. <br>3.Wide Applicability: Generally applicable to ships, factories, laboratories, families. <br>4.Easy to Install is lightweight and easy to install, suitable for hanging or placed on a . <br> <br>Parameter: <br> brass for shell, bottom for shell, acrylic lens <br>Size(about): <br>: diameter: 98mm/3.86in, thickness: 33mm/1.30in; <br>hygrometer: diameter: 98mm/3.86in, thickness: 33mm/1.30in; <br>: diameter: 98mm/3.86in, thickness: 36mm/1.42in; <br>timepiece: diameter: 98mm/3.86in, thickness: 32mm/1.26in <br>: 0.3mm aluminum sheet printed black on white. <br>Measurement function parameters: <br>: -30 ~ 50C, accuracy: +/- ; <br>hygrometer: 0 ~ , <br>accuracy: +/- 5% (40 ~ 70% ); <br>: 950 ~ 1070hPa, <br>accuracy: +/-5hpa (980~1040hPa); <br>timepiece: travel for time error is not more than +/-1 second / day <br> <br><br>Note:<br> <br>1.Please allow 1-3mm error due to manual measurement.pls make sure you do not mind before you bid <br>2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. <br> <br>Package : <br>1 *Air pressure gauge <br>1* <br>1* meter <br>1*Timepiece<br>

• 1.Precision temperature sensing hairspring; wet hairspring; gear transmission structure movement; 1 second clock movement; Metal .
• 4.Easy to Install is lightweight and easy to install, suitable for hanging or placed on a .
• 3.Wide Applicability: Generally applicable to ships, factories, laboratories, families.
• 2.Readings Comparison: The contrast pin on the lens is used to compare readings to see if atmospheric pressure rises or falls over a certain period of for time.
• QUALITY GUARANTEE: Best quality. Our Brand is dedicated to provide high standard products，we have confidence in our products and provide after sale support,if you have products quality issues, please contact us.