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  • Precision biaxial tiltmeter
  • Weatherproof
  • High gain version range: ±0.46°
  • Mid range version range: ±4°
  • ±8 VDC (single-ended), ±16 VDC (differential) output
  • NEMA 4X designation
  • Anodized aluminum and epoxy-coated housing
  • Operating temp: -13 to 158°F (-25 to 70°C)


The Jewell Instruments A701-2 (4X) Platform Tiltmeter is a weatherproof version of the A701-2 Platform Tiltmeter. Its NEMA 4X designation means that it is unaffected by continuous exposure to moisture and wet weather. Also, its anodized aluminum and epoxy-coated housing resists corrosion that can occur on the side of a volcano or wherever it is operated. With its adjustable invar legs, you can install and level A701-2(4X) within minutes. The tiltmeter also measures temperature, and the internal electronics will drive tilt and temperature signals over cable lengths greater than 1000m.

Applications for A701-2(4X) include volcano monitoring; telescope, antenna and platform leveling; structural testing and monitoring; and any other demanding application that requires top performance under harsh operating conditions.