The vibrating wire spot-weldable strain gauges are mainly designed to measure strain on steel-structure surface. The gauge consist of a steel wire tensioned between two plates which can be either spot-welded or epoxy bonded to the surface in question. Gauge is pre-tensioned during manufacturing at mid full scale or in any other position if requested. Measuring coil is mounted inside a plastic red box with a buil-in thermistor for data thermal corrections