The movement in this compact open dial barometer is temperature compensated, fully adjustable with inch and millibar scales, and is calibrated for altitudes up to to 3,500 feet above sea level.

This brass porthole style barometer is weather resistant and guaranteed to never tarnish.

Features:

• Compact size
• Maintenance-free, ultra-hard brass finish
• Weather resistant
• Traditional porthole front opening bezel
• Beveled glass crystal
• Mounting methods for boat or shore

Specifications:

• Dial Diameter: 3 15 " (81 mm)
• Overall Diameter: 4 34" (121 mm)
• Depth: 2 18" (54 mm)
• Weight: 0.8 lbs