Encardio-rite model EDS-11V is highly resilient and reliable strain gauges. It has its suitability for embedment in mass concrete or for surface mounting by welding on steel structures. The sensor is welded in it and hermetically sealed by an electron beam welding technique, generating a vacuum of round 0.001 Torr inside it. Using this technique, any effect of oxidation, moisture, and ingress of water is eliminated. Accessories include a spider for strain rosette, no stress-strain container, dummy strain gage and extender.