This item is a Venus Aneroid Barometer, specifically Model SC-5, designed for educational or residential use.
Function: It is a scientific instrument designed to measure atmospheric pressure to predict weather changes.
Type: As an aneroid barometer, it uses a sealed metal chamber that expands or contracts with pressure changes, rather than liquid mercury.
Display: The dial displays pressure trends indicated by terms such as "Stormy," "Rain," "Change," "Fair," and "Dry".
Design: This model is designed to be mounted on a wall.