Join Date: Oct 2004
Location: Narragansett Bay
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An aneroid barometer is the type typically found on boats and usually does not require service or repair. Since it registers changes in atmospheric pressure though a pointer activated by a contracting or expanding vacuum bellows, no electrical current or batteries are required.
Keep in mind that the pointer will move very gradually, so you may not notice much change - therefore it may still work without realizing it. Generally, if the pointer moves toward low pressure, it means oncoming bad weather, high pressure means the onset of good weather.
The ship's clock of course, does require either electrical energy to power a motor, or a mechanical spring needing periodic winding. Check to see which type you have and maybe the problem will be solved. Otherwise, I would bring the instruments to a local watch/clock repair shop for their analysis.
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