https://www.omeka.pmarty.org/files/original/fecd849b61bd480a627b5a4d87ef01c2.jpg e4d1334a8a05248f090f8adfe582dafc Physical Object An inanimate, three-dimensional object or substance. Note that digital representations of, or surrogates for, these objects should use Moving Image, Still Image, Text or one of the other types. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Pickett and Eckel Dual-Base Log Log Slide Rule with Leather Case Subject The topic of the resource Slide-rule Mathematical instruments Description An account of the resource This Pickett and Eckel model 4-ES slide rule is made of aluminum finished in "eye-saver" yellow with black numbers, letters and symbols on both sides of the instrument. It also includes a clear plastic sliding indicator with a centered black line used for performing various calculations. On the left side of the front of the instrument is marked MODEL 4-ES DUAL-BASE LOG LOG RECIPROCAL SCALE (VECTOR HYPERBOLIC). The front is also marked with DF, CF, T, ST, S, CI, C, D, and DI scales. The back of the slide-rule is marked with PATENTS APPLIED FOR on the left side and PICKETT & ECKEL, INC. CHICAGO 3. ILL U.S.A 300 on the right side. The back is marked with LL1, LL2, DF/M, CF/M, TH, SH, L, CI, C, D, LL3, AND LL4 scales. The slide-rule also includes a leather case stamped with PICKETT and CALIFORNIA SADDLE LEATHER. This slide-rule belonged to Walter Stewart and is marked with his name on the front of the instrument and hand-written inside the leather case. It was acquired from his estate ca. 2016 and the date of manufacture (ca. 1959) was derived from his personal history and the date range available for the instrument. Creator An entity primarily responsible for making the resource manufactured by Pickett and Eckel, Inc. Date A point or period of time associated with an event in the lifecycle of the resource ca. 1959 acquired ca. 2016 Format The file format, physical medium, or dimensions of the resource 31 x 5.3 cm (12 1/4 x 2 1/8 inches) Type The nature or genre of the resource Physical Object Mathematical Instrument Slide Rule