Slide hammer electrode for poles and heavy timber
A slide hammer electrode fitted with long insulated 608 pins, for structural timber, poles and railway ties where you need to read well below the surface.
Fitment
- Connects to any Delmhorst meter with an external electrode socket
- Fitted with 608 insulated contact pins
- Uses the 305RET-0021 pin retainer
- Intended for timber, poles and ties over 6 inches (150 mm) in diameter or board thickness
Specifications
| Model | 18-ES |
|---|---|
| Pins | 608, Teflon insulated except at the tip |
| Maximum penetration | 3 1/4 inches (82.6 mm) |
| Suits | Poles, ties and timber over 6 inches thick |
Pre-drill the pilot holes
Delmhorst recommends pre-drilling pilot holes for this electrode, and it is sound advice. Driving 82 mm insulated pins into seasoned hardwood without a pilot bends pins, strips retainers and does the slide hammer no good either. Pilot holes also give repeatable depth, which matters if the readings are going into a report.
Frequently asked questions
Why not use the 26-ES on heavy timber?
The 26-ES reaches 1 1/8 inches. On a 200 mm pole that is still the shell. The 18-ES reaches 3 1/4 inches.
Can I use it inside a wall cavity?
For cavity work the 21-E deep wall probe is the right tool — same pins, but a probe designed to be pushed rather than hammered.
What size pilot hole?
Slightly under the pin diameter, so the pin is held rather than loose. Test on an offcut of the same material first.
Not sure which part suits your meter? Tell us the model and what you are testing and we will confirm the right one before you order.
