aneroid barometer
"An Aneroid Barometer is like a coffee can, its sides are flexible and sharp made up of an alloy of copper and beryllium "
"We live in a large pool of air called an atmosphere. Air pressure is the weight of all this air weighing down on us. A barometer is an instrument that measures the amount of air pressure in the air. An aneroid barometer is like a vacuum and it does not use mercury because it dangerous. The more air that is above us the higher the air pressure is."
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.