Catalogued

Peg-and-string scheduling board

Made by: No originator documented; factory production control
Year: 20th century
Field: Management and industry
Kind: Physical object
Room: Lives and events — Placed by reading its description, not yet studiedCould also hang in: Links and trees

Skeleton drawing, not the original plate

8 other forms share this skeleton

Source

Attribution less certain: contested, or no single inventor recorded