"Overs and unders" are still a thing in manufacturing. Up to 10% either way. e.g. https://support.discmakers.com/hc/en-us/articles/209954927-My-order-is-subjec

"Overs and unders" are still a thing in manufacturing. Up to 10% either way. e.g. https://support.discmakers.com/hc/en-us/articles/209954927-My-order-is-subject-to-5-over-or-under-my-ordered-quantity-What-does-this-mean-overs-and-unders- https://support.discmakers.com/hc/en-us/articles/209954927-M... https://www.lumi.com/blog/explaining-overs-unders https://www.lumi.com/blog/explaining-overs-unders http://www.admorefolders.com/overunder.html http://www.admorefolders.com/overunder.html