Could you please clarify what you are referring to as "the most commonly used"? Are you asking about a specific technology, tool, practice, or something else? With more context, I'd be happy to provide a focused answer!
In torches,
Romans first developed the calendar used most today
Alternating.
The most commonly used survey tools are internet, telephone calls and written forms. Companies use surveys to investigate the conditions on the market.
Kelvin
what is the first and largest category in the classifiction system most commonly used today?
The most commonly used transparent video format in the industry today is WebM.
Aneroid
atx
AA is the most commonly used batteries.
what is the first and largest category in the classifiction system most commonly used today?
Cell/Mobile phones most likely
Hindu-Arabic numerals
The most commonly barometer used today would be a Aneroid.
The most commonly used seasoning used in cooking is salt. Salt and Pepper are used together usually.
Historic, Distributive, Physical, and projection maps or elevation( commonly used today)
Star