A strain gauge is a device used to measure the strain of an object (i.e. how much a material is deformed when submitted to outside stresses).
Invented by Edward E. Simmons and Arthur C. Ruge in 1938, the most common type of strain gauge consists of an insulating flexible backing which supports a metallic foil pattern. The gauge is attached to the object by a suitable adhesive. As the object is deformed, the foil is deformed, causing its electrical resistance to change. This resistance change, usually measured using a Wheatstone bridge, is related to the strain by a quantity known as the gauge factor.
JAD Systems' strain gauges are of the highest quality, and are characterised by: