- Armspan is the distance between the tip of the middle fingers of both the hands, when we stretch our arm.
- Cubit is the distance between the elbow and the tip of the middle finger.
- Handspan is the distance between the tip of the little finger and the tip of the thumb when we spread our hand.
- Inch is the width of the thumb.
Therefore, correct order would be,
Armspan > Cubit > Handspan > Inch