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K&E 4160 Family of Slide Rules

Scale set :

Scale set:

• Sought = Given C = D
• Sought = Given CI = D

4160 --- 10" Dulpex mahogany Chemist's slide rule. No laminate on edges. Metal cursor blocks. 1916 Production #161

4160 --- 10" Dulpex mahogany Chemist's slide rule. No laminate on edges. 1916-1921 Production #207

4160 --- 10" Dulpex mahogany Chemist's slide rule. 1925- 1927 Serial number 183656.

The following addendum to the 1913 hard bound catalog is the first description of the rule in print: