Keuffel & Esser 4080-3
slide rule
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ManufacturerKeuffel & Esser
Serial No.142376
Scale length25 cm
Overall length34.3 cm
Width4.0 cm
Body/Slide materialsCelluloid on Mahogany
Post materialsMetal
Cursor materialsCelluloid / Metal / Glass
Scales L LL1 DF [CF CIF CI C] D LL3 LL2
LL0 LL00 A [B T ST C] D DI K
AccessoriesTan leather case with replacement flap.
NotesInscribed J.L. Blake
Tag No.KE-4080-3