This open dial barometer measures atmospheric pressures mechanically. With a sturdy base it has a porthole front opening. It is light and user-friendly without using any liquids. Product Features: Maintenance-free ultra-hard brass finish guaranteed to never to pit peel flake rust or tarnish Withstands at any weather as it is resistant to any weather Features with a strong beveled glass crystal Traditional porthole front opening bezel Single wood base in mahogany Recommended for both indoor and outdoor use Dimension: 8 diameter Material(s): brass