Model AP/W Holiday Detector, by Tinker & Rasor

The #1 specified Holiday Detector around the world for inspection of thick or thin coatings. Voltage settings from 0.8v to 35 kV.

Tinker & Rasor introduces the completely redesigned Model AP/W high voltage holiday detector. The Model AP/W has built upon the advancements of the Model APS and packaged them into a belt worn instrument to provide a holiday detector with the application flexibility to move from pipe, to tank, to concrete and beyond. This pulsating DC holiday detector with regulated voltage* has a range of 800 volts to 35,000 volts, giving complete coverage for coating specifications.


  • Built for extreme environments
  • Rugged for field use
  • Power cutoff placed on Power-Pak
  • Longer Power-Pak cable
  • Form fitting design for wearing on hip or over the shoulder
  • 800 volts to 35,000 volts in one instrument
  • Safety cutoff switch
  • LCD output Meter
  • Audible & Visual detecting holiday indicators
  • MIL-SPEC, locking Power-Pak cable
  • Open, Ergonomic design, reduces user fatigue
  • Integrated belt loop system
  • Portable
  • 6v Rechargeable Battery
  • Multiple electrodes available (See Electrodes page for details)


The Model AP/W comes complete in kit form, including:

  • Model AP/W instrument and battery
  • Power-Pak and 5' cable
  • 20', 1/4 turn Locking Ground cable
  • Wand handle, 18", with full circle spring electrode connector
  • Wand extension handle, 18"
  • Battery charger, 110v or 240v
  • Belt (Adjustable for either waist of shoulder use)
  • Voltage adjusting screwdriver
  • Adapter to use "Spy" Spring Electrodes
  • MIL-SPEC, carrying case
  • One electrode* 
  • Instructions Manual
  • Certificate of Calibration

*Includes an electrode of your choice (up to specific sizes)

The AP/W includes 

Square cut, tightly wound steel wire, for tight fit and intimate contact to coatings applied to pipelines. Made for use on pipelines, the Full Circle Spring Electrode will inspect the entire coated surface of the pipe in one pass. Available sizes, based on outside diameter of the pipeline, are 4” to 48” , in 2” increments. 

​Contact Farwest for pipeline electrodes greater than 48” in diameter.

Tinker & Rasor | Electrodes | Holiday Detection