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Collection of pages from K&E catalogs for the 4138 Morrison

Radio Engineer's Slide Rule

Description:

The 4138 Morrison Radio Engineer's Slide Rule was a special slide rule for solving problems in radio engineering in the time frame of 1939. It had a set of 9 scales specifically for radio proprogation.

The 4138 only appeared in the 1939 catalog of the catalogs available.

Scans: Scans of a 4138

• 4138 Scans
• 4138 Manual