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Picket Log-Log Speed Rule (Dual Base): Model N 600-ES

L.E. Jones

A 5″ all-metal pocket slide rule, made of aluminum, with grooves on the slide, the special “Eye Saver” (ES) design with yellow background and black markings. The slide rule has a convex plastic cursor, frameless with nylon bars. This pocket slide rule was obtained with a sleek, sewed leather case. Scale: Front: LL1 (LL01), A, B, ST, T, S, C, D, DI, and K. Back: LL2 (LL02), DF, CF, Ln, L, CI, C, D, LL3 (LL03). Note :The scales within parentheses are present but not listed.

Accession Number: 2010.lej.35

Alternative Name:

Primary Materials: Aluminum, Plastic

Markings: Old Inventory Number = 35.

Dimensions (cm):

Length = 15 cm; Width = 3.9 cm, Height = .8 cm.

Function: Facilitating calculations.

Condition: Item is in very good condition.

Associated Instruments:


Pickett Inc., Santa Barabara, California, 93102

Date of Manufacture: c. 1964-1975


Additional Information and References:

Historical Notes: