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Trig Slide Rule

L.E. Jones

A 6″/5″ All Metal Pocket Slide Rule, made of aluminum, with grooves on the slide. An “Eye Saver” (ES) design with yellow background and black markings. The slide rule has a frameless glass cursor. Includes a cardboard box along with a manual, business reply envelope, a guarantee registration card with number “A1227107” with the actual instrument in a sleek leather case. Scales: Front: K, A, B, CI, C, D, L; Back: S, ST, T, C, D.

Accession Number: 2010.lej.2

Alternative Name:

Primary Materials: Metal, Plastic, Glass, Paper


Old Inventory Number = “2”. Markings: “Model N 200-ES Trig. Made in U. S. A. Pickett All Metal Slide Rules”.

Dimensions (cm):

Height = 0.6, Width = 2.2, Length = 15.4

Function: Facilitating calculations.

Condition: Item is in very good condition.

Associated Instruments:


Pickett Inc., Santa Barbara, California, USA 93102

Date of Manufacture: c. 1962-1975


Part of L. E. Jones’ slide rule collection.

Additional Information and References:

Historical Notes:

Includes: Pickett instruction manual for trig calculator (1960), Business Reply card, Pickett Slide Rule Guarantee. For more information about Keuffel & Esser Co.’s history, see:


  • Donated to UTSIC