ounces
pounds
You would use the unit pounds or 'lb.' Usually, when measuring the weight of anything, you would use the unit pounds. Weight is to differentiate the difference in mass from one place to another. On the moon you weigh something, on the earth you weigh something heavier. So, to compare that, we generically use pounds to identify weight. An example: 25 lb. If you were measuring mass, however, it would be grams then.
Weight is a force the unit of weight is Newton. F = ma Kilograms is the unit of Mass.
Metre (for its length). Kilometres per hour (speed) Tonnes (Mass)
Tape measure
It is customary to use the kilogram - though that is technically not a weight, but a mass.
Ounces
Grams (g)
centimeters
Mass in kilograms (kg is the SI unit for mass)
The ounce.
ounces
ounces
That would be grams.
pounds
The abbreviation lb means pounds.