Keuffel & Esser N4080-3
Log Log Duplex Trig
slide rule
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ManufacturerKeuffel & Esser
ModelN4080-3 Log Log Duplex Trig
Serial No.807157
Scale length25 cm
Overall length31.8 cm
Width4.0 cm
Body/Slide materialsCelluloid on Mahogany
Post materialsMetal
Cursor materialsCelluloid / Metal / Glass
Scales LL02 LL03 DF [CF CIF CI C] D LL3 LL2
LL01 K A [B T ST S] D L LL1
AccessoriesTan leather case.
NotesFront is yellower than the back.
Tag No.KE-N4080-3