Fisher M97 Valve & Box Locator

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Overview:
Fisher Labs, a leader in innovative locating solutions since 1931, introduces the M-97 Valve and Box Locator. This device is specially designed for locating buried or paved-over valves, boxes, manhole covers, and other concealed metallic objects, including targets made of aluminum, brass, and lead. The M-97 combines ease of use with advanced features to deliver reliable performance in various field conditions.

Key Features:
- Simple Operation: Equipped with two knobs and a pushbutton, the M-97 is easy to operate, allowing for quick and effective detection.
- Adjustable Shaft: The adjustable shaft with a double locking stem ensures user comfort and stability during operation.
- Ground Effect Rejection VLF Technology: This technology eliminates false signals from wet ground foliage, pavement, or mineralized ground, ensuring accurate readings.
- High Sensitivity: The M-97 offers high sensitivity for maximum penetration through soil, asphalt, or concrete.
- Built-in Battery Test and Pushbutton Tuning: Ensures the device is always ready for use with optimal sensitivity settings.
- Ultra Slow Auto-Tune: Stabilizes ground tuning and minimizes frequency drift, enhancing detection accuracy.
- Audio and Visual Indications: Identifies metallic objects by speaker sound and needle movement on the meter.
- Compact Size: The M-97's design allows for convenient storage. The lower stem can be compacted, and the search coil can be twisted 90 degrees and folded flat, fitting easily into an optional carrying case.

Specifications:
- Output Frequency: 4.5 kHz
- Sensitivity: 0.20 mV RMS for full scale; Sensitivity adjustment range: 12:1
- Output Indications:
  - Meter: 1 milliamp, 0-100 linear scale
  - Speaker: 16-ohm impedance
  - Headset (optional): 8-ohm impedance
  - Audio Frequency: 450 Hz
- Power Supply: Two 9V batteries
- Battery Life: 25-35 hours (Alkaline)
- Power Consumption:
  - (-9V) 13.8 mA
  - Minimum sound: 8 mA
  - Maximum sound: 50 mA
  - Audio threshold: 17.5 to 18.5 mA
- Search Coil Configuration: Double-D
- Weight:
  - With 8-inch search coil: 3.3 lbs (1.5 kg)
  - With 11-inch search coil: 3.9 lbs (1.8 kg)
- Dimensions: Adjustable from 38 to 50 inches (96 to 127 cm)
- Shipping Dimensions: 6” x 13” x 35” (15.12 x 32.76 x 82.2 cm)

Accessories (Optional):
- Hard carrying case
- Vinyl carrying bag
- Headphones
- Coil covers
- 11” search coil

Warranty:
The M-97 comes with a two-year limited warranty, ensuring reliability and peace of mind. Terms of the warranty are detailed in the warranty registration card accompanying the instrument.