Desco Wrist Strap Tester, 9VDC Battery Features:

• Tests Path To Ground and Presence of an Inline 1 Megohm Resistor in Wrist Strap
  Determines that operator’s personal grounding device* is functioning correctly.
• 9 Volt Battery Power Supply
  Tester may be set up in areas where AC power is not available.
• NIST Calibrated with Certificate
  Calibrated with accepted procedures and standards traceable to the National Institute of Standards and Technology. For more information on calibration of Desco products, see Calibration
• Made In The United States of America

TB3017 - Wrist Strap Tester