This insulated probe attachment fits all Delmhorst meters.
- Two pins (insulated)
- 3 1/4" penetration
- Use on EIFS, insulation and roofs
- Also available as a 21-ET with a tapped handle. This feature allows you to attach a threaded extension pole -- great for checking moisture in high and hard to reach places.
- Also available as a 21-E/001 with 7" pins for EIFS