Key features

Rugged, reliable, and extremely accurate
Ultra-high sensitivity to <0.1 µrad with virtually zero long-term drift
High precision tilt measurements

About the 701-2A/2B High-Precision Platform Inclinometer

– platform tiltmeter for high-accuracy tilt & deformation monitoring

The 701-2 platform tiltmeter (available as 701-2A High-Gain and 701-2B Mid-Range) is one of Jewell Instruments’ most widely used designs for high-precision tilt measurement. With integrated Invar leveling feet, it can be mounted quickly and repeatably on any horizontal surface. The unit also provides two switchable gains and two low-pass filter settings, allowing you to optimize measurement behavior and signal smoothing for your application.

Precision that stays stable over time

At its core is an absolute, gravity-referenced electrolytic sensor, delivering ultra-high sensitivity down to < 0.1 µrad with virtually zero long-term drift. Output is a stable ±8 VDC (or ±16 VDC differential)—ideal for precise data acquisition and long-term monitoring.

Key benefits

Invar leveling feet for easy, repeatable installation
2 switchable gains + 2 low-pass filters for flexible signal optimization
2-axis measurement (X/Y) + temperature channel
High resolution: up to 0.1 µrad (701-2A) or 1.0 µrad (701-2B)
Industrial-ready enclosure: NEMA 4X / IP65, rugged housing, 3 m cable

Typical applications

A proven solution for volcano monitoring, high-precision geotechnical engineering, bridge deflection/deformation monitoring, precision metrology, radar platform leveling, and other high-accuracy tilt monitoring tasks.

Versions & quick selection guide

701-2A (High-Gain): linear range ±0.046° (High Gain) / ±0.46° (Low Gain), resolution 0.1 µrad
701-2B (Mid-Range): linear range ±0.8° (High Gain) / ±8.0° (Low Gain), resolution 1.0 µrad

Output: ±8 VDC (single-ended) / ±16 VDC (differential)
Supply: ±11 to ±15 VDC
Operating temperature: −25 °C to +70 °C

Do you need this sensor for your next project?

Request a no-obligation quote or send us your contact details for a free, no-obligation consultation. Our sales engineers will then contact you within a maximum of 1 to 2 working days.

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Product downloads

700 series 701 2 platform tiltmeter en

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Not exactly what you are looking for? We offer standard sensors, but can also help you with sensors adapted for you or a fully customised measurement solution. Contact us for advice or pricing.

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Technical Specifications

Specification	Value
Dimensions	150 x 150 x 100 mm
High-gain range	High-Gain ±0.046°, Mid-Range ±0.8°
Housing	Anodized & painted aluminum
Low-gain range	High-Gain 0.46°, Mid-Range ±8°
Output	±8 VDC (single-ended), ±16 VDC (differential)
Power requirement	±11 to ±15 VDC @ 11 and 6mA
Resolution	High-Gain 0.1 µradian, Mid-Range 1 µradian
Temperature range	High-Gain -8 to +70°C, Mid-Range -25 to +70°C

701-2 Biaxial Platform Tiltmeter