Catalogued

Compressor map

Made by: Turbomachinery testing practice; no single originator
Year: 1900s
Field: Engineering
Kind: Computing chart
Room: Values across a surface — Placed by reading its description, not yet studiedCould also hang in: Charts that compute

Skeleton drawing, not the original plate

4 other forms share this skeleton

Source

Attribution less certain: contested, or no single inventor recorded