Model: M1 Retro 
Low Voltage Holiday Detector

The Model M/1 Holiday Detector is a highly sensitive device designed to locate holidays (pin holes, voids, etc.) in thin film protective coatings of relatively high electrical resistance when such films are applied to the surface of material of low electrical resistance. In these applications, such as painted metal surfaces, the Model M/1 Holiday Detector will locate these points very accurately with an audible and visual signal. This method of inspection of thin film is a non-destructive test and will not injure the protective coating.

Model: M1 Retro
Low Voltage Holiday Detector

• Use on thin film coatings (up to 20 mils)
  on conductive substrates such as tanks,
  concrete

Construction

• Tough, belt worn case, strong, lightweight
  wand handle

• 67.5v D.C. Output
  80 Ω* Resistance for coating on metal
  90 Ω Resistance for coatings on concrete
  (*factory setting is 80Ω. See Instructions
  for information on changing setting to 90Ω)

• 4.25” x 5” x 2” Case, 1.5 lbs(127mm x 101.6mm x 50.8mm, .45kg)

• Shipping: 20” x 5.5” x 4”, 3 lbs.(508mm x 139.7mm x 101.6mm, 1.35kg)

Model: M1 Retro
Low Voltage Holiday Detector