Moving Mountains with the Help of Strain Gages

This video describes a unique strain gage-based sensor designed to measure the width of a crack in concrete or rock.  With a resolution of 1/10000th of an inch, this sensor represents the capabilities of custom sensors from VPG Stress-Tek and Hybrid Sensors available from VPG Micro-Measurements.

 

https://stress-tek.com/

http://www.vishaypg.com/docs/11574/hybrsens.pdf