• Use to calibrate Dual Independent Footwear Testers, Dual Independent Wrist Strap / Footwear Testers, SmartLog X3 Testers, and SmartLog V4  Testers
• Resistance limits set to specific values
• Selector knob to select resistance
• Multiple Ranges for Accurate Performance And Conformity
  Allows user to verify limits and specifications without sending off site.
• Made in the United States of America

Frequency of recalibration should be based on the critical nature of those ESD sensitive items handled and the risk of failure for the ESD protective equipment and materials. In general, we recommend that calibration be performed annually.