Accurate. Durable. Essential. The Caisson PM-20 Moisture Meter is a highly reliable pin-type moisture tester designed for builders, inspectors, carpenters, and restoration professionals who demand fast, accurate, and repeatable moisture readings in a wide range of materials. Whether you're assessing water damage, checking lumber before construction, or inspecting plaster and drywall for moisture intrusion, the PM-20 is your go-to diagnostic tool.

Key Features

  • Pin-Type Measurement: Penetration-style pins deliver accurate readings by directly assessing moisture content below the surface.
  • Wide Measurement Range: Detects moisture content from 5% to 80%, covering everything from dry wood to saturated building materials.
  • Fast Digital Readout: Large, easy-to-read backlit LCD screen provides real-time readings in seconds.
  • Over-Range Indicator: Alerts users when moisture levels exceed normal thresholds — critical for identifying areas of potential mould or structural risk.
  • Compact and Ergonomic: Lightweight and rugged design with a rubberised grip for comfortable use in tight or overhead spaces.
  • Auto Power-Off Function: Preserves battery life during long days on site.
  • Replaceable Stainless Steel Pins: Easy to maintain for long-term accuracy and usability.

Applications

  • Building Inspections: Identify potential water intrusion in walls, ceilings, and floors.
  • Timber Testing: Ensure proper moisture content before cutting, joining, or finishing wood.
  • Restoration Work: Verify dry conditions during water damage restoration or flood remediation.
  • DIY Projects: Perfect for homeowners checking for leaks, moisture behind paint, or preparing materials for renovation.

Technical Specifications

  Feature

  Specification

  Measurement Range

  5% to 80%

  Display

  Digital LCD with backlight

  Measurement Principle

  Pin-type resistance measurement

  Material Modes

  13 Scales built in

  Auto Power-Off

  Yes (after 3 minutes of inactivity)

  Battery

  2 x AA battery

  Dimensions

  146 x 79 x 24 mm

  Weight

  Approx 200g

  Warranty

  12 months

 

Why Choose the Caisson PM-20 Moisture Meter?

The Caisson PM-20 stands out for its rugged construction, easy operation, and professional-grade accuracy. Unlike many budget meters that provide unreliable or surface-only readings, the PM-20 penetrates deep into the material for more dependable results, making it ideal for compliance checks, insurance assessments, or pre-renovation planning.

It’s a must-have moisture meter for professionals in construction, property inspection, cabinetry, carpentry, and insurance restoration—but it’s also simple enough for homeowners to use confidently.

Order your Caisson PM-20 Moisture Meter today and get the accuracy and confidence you need to tackle moisture-related issues head-on. Fast shipping across Australia and expert support available.