Deci-Multiphase Log Log Slide Rule: Model 3

L. E. Jones

Accession Number: 2010.lej.14

Description:

A 10″ All-metal slide rule. Magnesium body and aluminum posts. The frameless cursor is made of flat plastic and aluminum. Grooves are present on the stock. The
instrument comes with a grey felt cover (to avoid corrosion problems encountered with magnesium slide rules) and a grey cardboard box. Comes with an instruction booklet. Scales: Front: ∛, DF, CF, T, ST, S. CI, C, D, DI, √. Back: 1/N1 (0.00D), 1/N2 (0.0D), 1/N3 (0.D), 1/N4(D), DF/M, CF/M, CI , C, D, N1 (0.00D) , N2(0.0D), N3(0.D), N4(D).

Alternative Name:

Primary Materials: Metal, Plastic

Markings:

Old inventory number = 14.
Markings : “F609068”.

Dimensions (cm): Height = .9, Width = 6.1, Length = 31.2

Function: For facilitating calculations.

Condition:

Good: The slide is stuck possibly due to corrosion.

Associated Instruments:

Manufacturer: Pickett and Eckel Inc. Alhambra, Calif.

Date of Manufacture: c. 1949-1953

Provenance:

Historical Notes: