At Precision, internal calibration has been one of the cornerstones of our business. We use only the highest quality testing and calibrating equipment along with a state-of-the-art environmentally controlled laboratory. We are proud to announce we use the Zeiss Opal 600, Universal Measuring machine known for its quality, high measuring accuracy and reliability. For your internal calibration needs, as well as all your inspection artifacts, you can trust and rely on us. Remember, we are an ISO/IEC 17O25 Accredited company. Examples Deadweight Testers Durometers Dynamometers Feeler Gages Force Gages Gage Blocks Height Masters Length Standards Load Cells Mike Masters Pin Gages Plug Gages Radius Gages Ring Gages Scales Steel Rules Tensile Testers Tensionmeters Test Stands Thread Plug Gages Thread Ring Gages Thread Wires Torque Testers Torque Transducers Torque Wrenches Trav-A-Dials Weights Etc.