Collection of 5 Vintage Calculation Tools Including Slide Rules Steel Squares and Compact Technical Manuals

Description

5x Old Slide Rule & Steel Square Small Books / Booklets including:

How To USe The Stanley Steel Square

The Steel Square by Harold Ryder

2x Faber Castell Slide Rules Books / Booklets

P.I.C. Slide Rules

Condition: please see photos for condition.

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