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The article discusses the increasing use of strain sensors. In recent years the area of sensors has become increasingly important because of their varied applications in many areas. The term sensor is a broad terminology which encompasses a wide variety of devices. The alternative term commonly used for strain sensor is strain gauge. Basically, a strain gauge is a device used to measure the linear deformation occurring in a material during loading, In addition to their fundamental use for measuring strains as such, strain gauges are also used for measuring other physical quantities such as pressure, load, displacement and torque.