Strain gages are extremely sensitive sensors - they can respond to the smallest changes in dimensions of components. The ability to measure these changes is limited by the stability and resolution of the strain measuring instruments - The greater the stability and resolution , the smaller the strain that can be detected and measured. The prime requirement for this is very high quality straingage applied with the best straingage installation accessories, adhesives and bonding methods described in instruction bulletins such as those available from MIcro-Measurements.
To resolve strain to small fractions of a microstrain and display them without error is an important requirement of critical strain gage applications such as transducer manufacturers , aerospace and defense applications.