Textiles and Nonwovens Machinery and Equipment Testing EquipmentWelcome to J.A. King.com! Announcing a valuable partnership with Instron! In addition to the service you have come to expect from J. A. King & Co., we are pleased to announce a valuable partnership with Instron , the market leader for material testing equipment. We can now offer you two levels of service tailored to meet your internal quality standards and ASTM standards. Tier 1: J.A. King & Co. performs force, displacement, speed, and hardness calibration services that are fully accredited to ISO 17025, traceable to NIST, but are