Desco 98221 Wave Distortion Monitor Verification Tester Features:

• Calibration Verification
  Checks the test limits of Desco Wave Distortion Monitors without removing them from their workstations
• NEW Extruded Aluminum Enclosure
  
  Shields the tester from electrical interference when in-use
• NIST Calibrated with Certificate Included
  Calibrated with accepted procedures and standards traceable to the National Institute of Standards and Technology. For more information on the calibration of Desco products, see Calibration.
• Made in the United States of America

TB-3074 - Wave Distortion Monitor Verification Tester Operation Instructions