K&E 4055 --- 10" Laminated Mahogany Mannheim Slide Rule

All glass cursor with ridges on end blocks

Specimen #2

Note: This rule is identical to Specimen #1 except that printing on the top part of the rule is in different order and the case is a slip case. This printing change probably represents a tooling change in about 1934. This change is seen in later 4055s.

From the collection of Clark McCoy

Case

Front Side

Back of slide

Back side

Bottom edge

Top edge

Left end view