4x4 Post Holders Woodworking Metal Detectors
203 N. Saginaw
Holly, MI 48442

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Logging Metal Detectors

Hand Held Units

Whole Log Systems:
Shielded Coil System

Under Conveyor Style Metal Detectors:
Standard L240 With A10 Search Coil
High Powered LS345 With A20 Search Coil

Metal Detector

Built with the same rigid standard that has made metal detectors one of the most durable and reliable units in the field today. Backed by more than 50 years of experience, design and service.

model P-4000 is a fully automated unit. No manual adjustments are required. Simply turn on and let it work as hard as you do. Runs ten hours on a full charge. Regulated power prevents loss of sensitivity as battery charge is depleted.

This unit is designed to be used in an industrial environment without needing a lot of operator skill.

Factory Direct Repair Service
Two Year Warranty-Parts & Labor

P-3000 Control Panel
P-4000 Poly-Form Carrying Case


Swivel Head
Weight: Approx. 7 1/2 lbs.
Length: 51 1/2" - 57" adjustable
Power Supply: 17.5 volt
Solid State Circuitry
Adjustable Sound Level (0-100db)
Includes: earphone, shoulder strap, battery pack, re-charger & Poly-form carrying case

- Self Calibrating
- Durable
- Regulated Power
- Battery Gauge
- Protective Case & Chassis
- Fully Adjustable

Sensitivity Table
All Distances in inches from point A*

Sensitivity Table

The above items can not be detected at distances farther away than shown in the above chart.

Search Coil Distance Example

Suggested method of scanning logs

This procedure will insure that the entire surface of the log is scanned by the metal detector.

NOTE: The surface (ground, deck, concrete floor) must be free of metal in order not to interfere with electromagnetic field of the search head.

1. Place search head close to the log surface and scan the entire length of the log as shown in diagram to left.

2. Move to other side of the log and repeat step 1.

3. Roll log over as required to expose unscanned surfaces. Scan the rest of the circumference of the log covering the complete surface of the log. Overlap longitudinal sweeps to prevent dead spots.

Log Scan Demo