Is Oz a mass or weight?

Related questions

1. How many pounds does 16 oz weigh?
2. How much does a half gram weigh on a scale?
3. When did the world switch to metric?
4. What is the weight measurement?
5. Do Australians use mph?
6. How do we measure weight?
7. How was the weight of a gram determined?
8. Whats a gram on a scale?
9. How many pennies does it take to weigh 100 grams?
10. Is Oz volume or weight?

Tags

1. #pound
2. #avoirdupois
3. #derived
4. #common
5. #volume
6. #united
7. #imperial
8. #apothecary
9. #systems
10. #measurement
11. #ounce
12. #weight
13. #abbreviated
14. #customary
15. #symbol
16. #states
17. #british
18. #approximately