Material testing machine and display method in material testing machine

A display method in a material testing machine that deforms a test piece and measures mechanical properties of a material of the test piece, the display method in a material testing machine comprising:

• a first detection step of detecting at least one of elongation and a strain of the test piece by measuring a distance between reference points of the test piece;
• a second detection step of detecting a strain distribution of the test piece based on an image of a pattern formed on a surface of the test piece;
• and
• a display step of displaying a detection result in the first detection step and a detection result in the second detection step in association with each other.