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This port hole boat barometer has a white dial face with classic writing and numbering and comes complete with a mobile index pointer to help with reading the change in atmospheric pressure.
Easy to install with three holes evenly spaced around the base. The barometer face opens on a hinge to reveal the barometer mechanism, when closed is held in place by the 'port hole' screw.

Port hole boat Thermo Hygrometer with a white dial face with classic writing and numbering.
Easy to install with three holes evenly spaced around the base.