Concurrently actions axial and torsional strains at high temperatures on specimens tested in axial/torsional machines. The autozero button and digital Display screen drastically simplify calibration of extensometers. The 3590 calibrator is helpful for extensometer calibration and verification with examination systems. Increased Trustworthiness and Standing: ISO 9001:2015 certification... https://www.nathanisoconsulting.com/iso-9001-certification-consultant.htm