Check Keuffel & Esser Slide Rule 4080 3 - Updated 2021

Check keuffel & esser slide rule 4080 3. These rules are identical except for the scale graduations of the trig scales. VINTAGE KEUFFEL ESSER WOOD SLIDE RULE WCASE. Keuffel Esser slide rule model numbers often have alphabetic prefixes and suffixes. Read also keuffel and keuffel & esser slide rule 4080 3 K S Slide Rule 4181-3.

The DI scale was added back to the Log Log Duplex Trig and Decitrig 4080-3 4081-3 slide rules in 1953. For example N4081-3 indicates a new revsion of already existing model 4081-3.

Vintage Mens Gray Atomic Fleck 3 Piece Suit Mens Size 45 3 Piece Suits Mens 3 Piece Suits How To Wear I believe that this rule probably dates from roughly 1946 or 1947 the serial number is about right for that date and and the revised model with all the details on the edge was introduced in 1949.

Topic: No printing on edge. Vintage Mens Gray Atomic Fleck 3 Piece Suit Mens Size 45 3 Piece Suits Mens 3 Piece Suits How To Wear Keuffel & Esser Slide Rule 4080 3

Content: Answer

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Publication Date: January 2020

Open Vintage Mens Gray Atomic Fleck 3 Piece Suit Mens Size 45 3 Piece Suits Mens 3 Piece Suits How To Wear

For KE serial number dating use the link here to Ed Chamberlains reference set of dating curves.

KEUFFEL ESSER K E SLIDE RULE 4083-3 WCASE. The top edge of the rule is marked. 13 inches long and is made of a durable heavy leather. Keuffel Esser 4081-3 2 - Notes. Purchased in 1936 with a 1936 copyright manual. 4080-3--- 10 Mahogany with laminated edges.