Question

Following instrument is

used to measure internal

deformation and cracking​

Answer 1

Extensometer is used for measuring internal deformation and cracking​.

Explanation:

• It is a device that is used to measure the changes in dimensions and length of the objects.
• The name of this device is derived from the word "extension-meter".
• In order to measure tensile stress and strain this device is a very useful instrument.
• It can measure the minute details very precisely and accurately.

Answer 2

Answer:

Extensometer

Explanation:

Hope this will help you...