Strain Gage & Accessories

Overview of Strain Gage

About Strain

Strain is a ratio of elongation to the original length, thus it is an absolute value and is expressed with numeric value with 10-6 strain, με or μm/m suffixed.

For example, if a bar elongates 0.001 mm from its original length 1 metre long, then the strain is 0.001 mm / 1 m = 1 μm/m.

Strain Gage is used to detect a minute dimensional change (strain), caused by tensile or compressive force, as an electric signal in the Wheatstone bridge configuration. By measuring strain with the strain gage bonded to a material or structure, the strength or safety of the material/structure can be known. Thus, the strain gage is used in various industries including machinery, automotive, electric, civil engineering, medical and food.


  • Automobile
  • Aerospace/Marine
  • Rail/Road
  • Electric, Electronics, PCB board
  • Machinery
  • Civil Geotechnical, Structural Health
  • Energy


An overview of Strain Measuring System is shown as follows:


Strain Gage


Strain Gage Structure

Kyowa provides a complete range of strain gages for different applications.

Types of strain gages:

  • General stress measurement
  • High temperature
  • Low temperature
  • Waterproof
  • High-elongation strain
  • Concrete
  • Composite material
  • Printed Circuit board (PCB)
  • Plastics
  • Bolt axial tension
  • High electric field
  • High magnetic field
  • Hydrogen
  • Highly sensitive semiconductor
  • Residual stress
  • Crack
  • Internal stress
  • Bending strain
  • Weldable
  • Thermocouple-equipped

Click here to learn more about the types of strain gages, or contact us for help on selecting the suitable strain gages.

Strain Gage Accessories

It is important to bond strain gages to measuring targets completely in order to obtain good measuring data.

Kyowa provides full range of strain-gage accessories like Adhesives, Lead Wires, Gage Terminals and Coating Agents, etc.

Strain Gage Adhesive and Bonding Tools

For bonding strain gage to measuring object.



Lead wire Cables

For extension of strain gage’s cables/wires. Careful consideration is needed when extending to long lengths, as overall resistance of the strain gage will change.


Gage Terminals

Serves as a connection between a strain gage and lead wire to protect the strain gage leads from breaking or peeling off if the lead wire is pulled.


Coating Agents

Applied to strain gage and gage terminal to protect the gages from moisture in outdoor or long-term measurement.


Accessories for High Temperature Strain Gages

High-temperature solder, flux for high-temperature solder, heat-resistant glass tube, heat-resistant tape, etc.


Compact Spot Welder

Used for mounting encapsulated strain gages, fix high-temperature lead wires with a metal band or to mount thermocouples.


Gage Mate

Use for applying constant pressure to a bonded strain gage continuously until adhesive is cured.


Strain Gage Bonding Tool Kit

The kit includes all tools, gage terminals, solder and other expendables required for gage bonding work.