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Collection of pages from K&E catalogs for the Decitrig Overhead Projector

Demonstration Slide Rule

Description:

Catalog page from the 1967 catalog

K&E produced special transparent plastic versions of several models. K&E model 68 1960 is a transparent plastic Log Log Duplex Decitrig slide rule for use with an overhead projector.

History:

The model 68 1960 was only shown in the 1967 catalog.

Scans: Link to scans of the 68 1960