Nautical Helm Clock

Nautical Helm Clock
11X4X13
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The workings of the aneroid barometer movement are visible, and the antique brass case that houses it is hinged so that the movement is accessible from the front. Dial: 5-1/2". Base: 8". Depth: 3-1/2". Wt. 3 lbs. 8 oz..

This unit houses a special patented double capsule movement that is factory certified to be accurate to within 0 .2% of real pressure. More noteworthy is that the scale range has changed from the traditional scale of 27.5" to 31.5" Hg to an expanded scale of 28.5" to 30.5" Hg. This exaggerates the needle movement, making a small change in pressure much more noticeable. The barometer movement is calibrated for altitudes to 1500' above sea level. Wt. 3lbs. 3 oz.

Chrome - Clock - Chrome Ship Wheel W/Barometer - 12 1/2" Diameter

Temperature compensated, aneroid barometer movement. Fully adjustable. Inch and millibar scales. Our standard barometer movements are calibrated for altitudes to 3,500' above sea level. Movements for altitudes from 3,500' to 7,000' are available by special order for an additional charge. Thermometer has both F and C scales, with markings every 2 from 32 to 122F. Dial: 4". Base: 5-1/2". Depth: 2-7/8". Wt. 3 lbs. 3 oz.