ST350 Strain Gauge

The highly accurate ST350 Strain Transducer from Bridge Diagnostics brings great efficiency and reliability to measuring live-load stresses on structures. With minimal surface preparation, you can quickly install the transducer and avoid the tedious and time-consuming effort involved when using foil strain gages. The ST350 is rugged and can be installed in any weather.



  • Used for recording strains on highway bridges, railroad bridges, lock gates, amusement park rides, and other structures in which a short-term live-load can be easily applied.
  • Attaches to steel, prestressed and reinforced concrete, and timber members in 5 minutes.
  • Provides between three and four times the output of a typical quarter-arm foil gage installation. Improved signal-to-noise ratio means higher-resolution measurements.
  • Can be used with most data acquisition systems that support full-bridge type sensors.
  • Pay for themselves with just a few uses.
  • Used over the last two decades for recording millions of strain measurements on all types of structures, often in harsh field conditions.




Effective gauge length: 3.0 in.

Overall size: 4.375 in. by 1.25 in. by 0.5 in.

Material: Aluminum

Accuracy: +/- 2% (calibrated to NIST standards)

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