Nautical Martinique Hi-Sensitiv Barometer

Nautical Martinique Hi-Sensitiv Barometer
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.
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This three-in-one instrument features a clock with second hand, as well as a hygrometer, and thermometer. A forged porthole-style brass ring holding a thick beveled crystal is mounted to a mahogany finished case. The battery operated precision quartz movement is easily accessible from the rear of the clock. AA battery operated, precision movement. Thermometer reads in Fahrenheit and Celsius. Hygrometer shows percentage of humidity in the air. Dial: 6-1/8". Base: 9-7/8". Depth: 3". Wt. 3 lb. 15 oz.
The entire instrument is made of forged brass that has been hand polished and coated with lacquer. It swivels horizontally and vertically in the gimbal for adjustment to any viewing angle. The screw bezels on each side of the instrument allow easy access to the precision clock movement for battery replacement. AA battery is included. Overall dims: 8" (h) x 7" (w). Base Diameter: 4-1/2". Dial 3.5". Base 7"(h) x 3"(d). Wt. 4 lbs. 9.5 oz.
For two instruments with bases to 6-1/2" in diameter. USNA insignia not included. Dims: 11" x 18". Wt. 2 lbs. 15 oz.
