Manufacturer: Keuffel & Esser
Model: 4139 Cooke Radio Slide Rule
Serial # 496209
Construction: Mahogany, Duplex, 10"
Scales: Front: L, DF, [ CF, CIF, CI, C ], D, 2Pi
Back: LC, A, [ B, T, ST, S ], D, DI
Last Updated on April 7, 2000 by John Current
Return to Slide Rule Page