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History of MachmeterThe machmeter, also known as a mach indicator, has a rich history in aviation instrumentation. It was first developed in the early 1940s as ...

IHistory of SpherometersInvention of the spherometerThe spherometer was invented by William Gascoigne in the early 17th century. Gascoigne, an English ...

How Odometers WorkWhen it comes to understanding how odometers work, it's important to differentiate between traditional mechanical odometers and modern ...

History of SphygmomanometerIn 1881, Samuel Siegfried Karl Ritter von Basch invented the sphygmomanometer, a device that measures blood pressure using a cuff ...

How an Ohmmeter WorksResistance is the measure of how much a material or device opposes the flow of electrical current. It is measured in ohms (Ω), named after ...

History of the StethoscopeOne of the most iconic tools in the healthcare industry, the stethoscope, has a rich history that dates back to the early 19th ...

History of OdometersAncient Measurement DevicesIn ancient times, people used various primitive devices to measure distance traveled. One such example is the ...

History of OptometerOptometers have been vital tools in the field of optometry for many years. The term "optometer" refers to a device used to measure visual ...

An otoscope is a medical device used by healthcare professionals to examine the ears. It consists of a light source that helps illuminate the ear canal and a ...

History of PeriscopePeriscope was developed and launched in March 2015 by Kayvon Beykpour and Joe Bernstein. The app was created with the idea of allowing ...