Use this section to introduce the history of the format your archive documents — when it emerged, how it was used, and why it fell out of circulation.
Origins
Explain the technical and political conditions under which your format emerged. Was it developed to solve a specific distribution problem? Was it an engineering compromise? Document the context.
Circulation
Describe how prints in this format moved through the world — who made them, who screened them, who watched them, and under what circumstances.
Decline
Most obsolete gauges have a specific moment of decline — a new technology, a policy change, a shift in audience habit. Document this moment as precisely as evidence allows.
Today
How many prints survive? Where are they held? What is their typical condition? This section is where current survey work goes.