Dual Base Log/Log Exponential Speed Rule: Model N4-ES
Accession Number: 2010.lej.15
A 10″ all- metal slide rule, with aluminum stock, slide and stops. The cursor is frameless and made of plastic, with plastic ends. The cursor slides smoothly on the stock, without need of grooves. This slide rule has Pickettʼs “eye-saver” yellow surface. Comes in a leather case. Item includes the original cardboard box with instruction manual. Scales: Front: LL1, LL2, DF/M, CF/M, TH, SH, Ln, L, CI, C, D, LL3, LL4. Back: ∛, DF, CF, CIF, T, T, ST, S, CI, C, D, DI, √.
Primary Materials: Aluminum, Plastic
Old Inventory Number = 15.
Markings: “Copyright 1959 Patent Applied For”.
Dimensions (cm): Height = 1, Width = 6.6, Length = 31
Function: For facilitating calculations.
Good: Seems to include original packaging and materials.
Pickett Inc. , Santa Barabara, California, 93102
Date of Manufacture: c. 1964-1975