Frank Bacon Machinery Sales is recognized as having the world's largest inventory of surplus hydraulic and electro-mechanical tensile strength testers, yield strength testers, flexural strength testers and compression testers. They recondition, retrofit and upgrade these material testers for stress, strain, yield strength, flexural strength, and proof load testing of any type of material. All reconditioned/retrofitted/certified testers have a 30-day full refund guarantee and 12 month warranty.