I personally use the pound avoirdupois.
A ruler would work best if you are wanting to measure the length of an eye dropper.
The term primary occupation refers to a field job that involves taking raw material from the environment. There are nine primary occupational categories: 1. Professional, Technical, and Managerial Occupations 2. Clerical and Sales Occupations 3. Service Occupations 4. Agricultural, Fishery, Forestry, and Related Occupations 5. Processing Occupations 6. Machine Trades Occupations 7. Benchwork Occupations 8. Structural Work Occupations 9. Miscellaneous Occupations
I would use litres.
Tradition.
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statiticians
contractors use a lot to design a house eg. blueprints
The measurement of my Dad is 6 foot.
Imperial measurement is in general use. Engineers, scientists etc use the SI system.
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Cartographers and Photogrammetrists Architects
with a ruler
I do.
Doctors use filtration for cleaning all the dirty stuff that isn't meant to be in our blood