What specific film size was utilized by the original No. 1 Brownie model?

Answer

Size 107

The original No. 1 Brownie used a specific roll film identified as size 107. This film format was designed to be easily loaded into the camera body. The integration of a specific film size was essential to the simplified system, ensuring that the camera could be mailed back to the manufacturer for processing as a self-contained unit.

What specific film size was utilized by the original No. 1 Brownie model?
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