K&E 4058 --- 10" Box Wood Mannheim Slide Rule with Original Box

Early Release of the 4058C

From the collection of Clark McCoy

This rule would appear to be an early release of the 4058C except it still has the name "Student's". The rule was probably produced between 1922 and 1925.

Complete kit with packing strap for rule

Packing strap partially installed

Closeups of cursor

Front side

Back of slide

Back side