श्वासोच्छवासाच्या हालचालींची खोली आणि गती रेकॉर्ड करण्यासाठी मोजण्याचे साधन,

Noun:

स्पायरोग्राफ,

spirograph's Usage Examples:

A pneumograph, also known as a pneumatograph or spirograph, is a device for recording velocity and force of chest movements during respiration.

Informally, climate spirals have been referred to as spirographs.

May 1918 – 17 September 2002) was an English engineer who invented the spirograph toy and created the company Denys Fisher Toys.

These patterns look similar to the results of a spirograph or Guilloché engraving.

The pattern used in this instance is called a spirograph in mathematics, that is, a hypotrochoid generated by a fixed point on.