Eddy-current calibration blocks

 

Designation

Defect parameters

Roller’s diameter, mm/in.

Roller’s length, mm/in.

 

Material

 

Field of use

Length, mm/in.

Width, mm/in.

Depth, mm/in.

 

ø 4 × 4

 

0.75; 1.5 / .03; .06

 

0.05 / .002

 

0.05 / .002

 

ø 4 / .16

 

4 / .16

 

Carbon steel

 

Aircraft, oil and gas, chemical, power, transportation, engineering industries

. . .

 

ø 32 × 52

 

0.75; 1.5 / .03; .06

 

0.05 / .002

 

0.05 / .002

 

ø 32 / 1.25

 

52 / 2

 

Carbon steel

 

Aircraft, oil and gas, chemical, power, transportation, engineering industries