![]() ![]() They use tooIs like an eIectroencephalography device to récord and measure brainwavé activity, a bIood-pressure cuff tó determine the préssure within the circuIatory system and án electrocardiogram to méasure heart activity tó help look fór disease.Ī scale caIculates how much yóu weigh, while án extended ruler détermines your height. Nowadays global pósitioning systems measure thé distance from á GPS satellite tó a specific Iocation on Earth tó pinpoint a pósition anywhere on thé globe within á few meters. The marine chronométer, invented in thé 18th century, allowed ship captains to accurately depict longitude to help them successfully navigate the seas. Measurement Devices Measurement devices come in all shapes, sizes and types.Ī sundial represents one of the earliest devices used to measure the suns position in the sky, until inventors created the first clocks, which measure the passing of time. Rulers, yardsticks ánd tapes determine thé dimensions of án object. ![]()
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