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Collection of pages from K&E catalogs for the 4019

Goodchild Mathematical Charts

Description:

The 4019 group of products 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

History:

The following catalog listings are the entries in the K&E catalogs:

• 1903 -- The 4019, 4019A, 4019B were first shown.
• 1906 -- The 4019, 4019A, 4019B were last shown.