Collection of pages from K&E catalogs for the 4019
Goodchild Mathematical Charts
Catalog page from the 1903 catalog
The 4019 is an implemation of the Goodchild Mathematical Charts and an accessory linear slide rule. The following products are in this group:
- 4019 --- Goodchild Mathematical Chart on paper.
- 4019A - Goodchild Mathematical Chart on a drawing board.
- 4019B - A linear boxwood slide rule for use with the charts
The following catalog listings are the entries in the K&E catalogs: