Short forms for pounds and ounces? [closed]

I have been using ' for pounds and " for ounces for quite a while now,but it was pointed out to me today that my pet cat weighs 6 feet 9 inches.(l wrote 6'9" to a vet). Are these acceptable abbreviations/short forms? And are those the descriptive words I want? Id est, is " a short form?Abbreviation? What would you call the use of punctuation as a representative mark for a measurement?

Solution 1:

' and " can mean a few things, including feet and inches or minutes and seconds (in the senses of either time or angle). However pounds and ounces is not one.

The appropriate abbreviation for pounds is lb, and for ounces is oz.