An aneroid barometer is an instrument used to measure the height or altitude of an object above a reference point, typically above sea level. Altimeters are widely used in aviation, hiking, mountaineering, meteorology, geography, and space exploration.
The aneroid sphygmomanometer is commonly used for the indirect measurement of blood pressure despite significant concerns about its accuracy. Although the mercury sphygmomanometer is highly accurate, there are concerns about the environmental toxicity of mercury.
