Yes, you need a scale for sure. It looks under, but looks can be very deceiving.

Wet or dankish cannabis will weigh much more than properly dried cannabis, so get a scale, and it will tell you.

A half ounce should weigh 14grams, and a quarter should weigh 7grams. It's a unit of measurement, so if it isn't either of those, something is a miss.

It looks like a quarter to me though.