In the interests of data collection we plan to weigh all of the harvests out of the demonstration garden, which is the 4,000 sq ft area we are starting with. And in the interests of juggling our numbers with greater ease (as almost everyone else in the world does) we will be using the metric system in our garden, for weights at least. Anyone who has frequently had need to do calculations using pounds and ounces will understand, as will anyone who has tried to teach someone from another country how to do calculations using pounds and ounces.
This has long been our plan, and a friend who used to teach middle school science and recently retired scored us a metric triple-beam balance to aid us in our quest.
Today we recorded 60.7 g of kale and 117 g of snow peas (photos pending). I feel like a world citizen already!