Print, zines and bookbinding
Paper described both ways, and the folding, trimming and binding that follow from it.
GSM and basis weights
GSM against every US basis weight, with caliper and PPI.
OpenSpine width
Spine width, text block and full cover width for a book.
OpenImposition and signatures
Signatures, sheets, blanks, creep and the page order per sheet.
OpenBleed and safe margins
Document size with bleed, safe area and cover spread width.
OpenRoll length by diameter
Length, area, weight and percentage left on a roll.
OpenInk coverage
Total area coverage and ink used, per page and for the job.
OpenEnvelope sizing
The standard envelope a folded document needs, with a size table.
OpenThese are planning figures, not a substitute for a standard, a specification or a professional. Check anything that matters against the source your trade actually works to.