Index of K&E Catalogs
Cross Reference Index
Index of K&E Collection
Index of K&E Manuals

K&E 4080 Family of Slide Rules

Scale set #1 (1936-1939)

L LL1 DF [ CF CIF CI C ] D LL3 LL2  
LL00 LL0 A [ B T ST S ] D DI K 

4080-3 --- 10" Mahogany with laminated edges. No printing on edge. Circular K&E logo. Serial number 521423. Purchased in 1936 with a 1936 copyright manual. This rule was produced in mid 1936.

4080-3 --- 10" Mahogany with laminated edges. No printing on edge. Circular K&E logo. Serial number 522055. This rule was produced in mid 1936.

4080-3 --- 10" Mahogany with laminated edges. No printing on edge. Serial number 585532. This rule was produced in late 1936 to early 1937.

4080-3 --- 10" Mahogany with laminated edges. No printing on edge. Serial number 585780. Known to have been purchased in the Spring of 1937. This rule was produced in late 1936 to early 1937.

Scale set #2 (1939-1947)

L LL1 DF [ CF CIF CI C ] D LL3 LL2  
LL0 LL00 A [ B T ST S ] D DI K 

4080-3 --- 1st Edition 10" Mahogany with laminated edges. Name is after .2 on L scale. Serial number 698763. This rule was produced in 1938.

4080-3 --- 2nd Edition 10" Mahogany with laminated edges. Name is after .1 on L scale. Serial number 141247. This rule was produced in 1945.

4080-5 --- 2nd Edition 20" Mahogany with laminated edges. No printing on edge. The serial number is 198329. This rule was produced in 1945.

 4080-3 --- 3nd Edition 10" Mahogany with laminated edges. Has K&E logo on right end. Serial number 378443. This rule was produced in 1947.

4080-3 --- 4th Edition 10" Mahogany with laminated edges. Has K&E logo on right end. Range marks for LL scales. Serial number 405094. This rule was produced in 1948.

Scale set #3 (1947-1952)

LL02 LL03 DF [ CF CIF CI C ] D LL3 LL2  
LL01 K A [ B T ST S ] D L LL1 

N4080-3 First Edition - 10" Mahogany with solid laminated edges and printing on the edge of the rule. Serial number 592267. This rule was produced in 1951.

N4080-3 Second Edition - 10" Mahogany with inlaid laminated edges and printing on the edge of the rule. Serial number 759186. Notice that the serial number is moved to the left end of the slide with partial serial numbers identifying the frame parts. This rule was produced in 1953.

Scale set #4 (1952-1967)

LL02 LL03 DF [ CF  CIF  CI  C ] D LL3 LL2  
LL01 L K A [ B T ST S ] D DI LL1

N4080-3 --- 10" Mahogany with inlaid wood edges with printing on edge. Serial number 839830. Until the discovery of this rule it was assumed that the addition of the DI scale and dropping of the N prefix happened at the same time. Obviously there was some production overlap This rule was produced in 1954

4080-3 --- 10" Mahogany with inlaid wood edges with printing on edge. Serial number 410613. Notice that the frame is held together with hex screws. Also the cursor lens is molded in plastic. This rule was produced in 1960.

68 1318 --- 10" Mahogany with inlaid wood edges with printing on edge. This rule is identical to the 4080-3 above except for the 68 xxxx series number. Serial number 360700. This rule was produced in 1972.

The 4080 series does not have a scale set with the SRT scale as the 4081s do.