Two Log Log Slide Rules - Fedra and Sterling 694 for Sale

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Two Log Log Slide Rules - Fedra and Sterling 694 For Sale

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Two Log Log Slide Rules - Fedra and Sterling 694:
$42.00

Sterling 694 Decitrig Log Log Slide Rule - 1972 New Old Stock - Never Opened
Made in USA - Borden/Sterling, Mountainside, NJ.
Front Scale: LL01, K, A [ B, T<45, T>45, ST, S ] D, DI, LL1
Back Scale: LL02, LL03, DF, [ CF, CIF, L, CI, C ] D, LL3, LL2
Note: Missing Model number and copyright date (look at the 594s).Excellent Log Log duplex slide rule, the top of the line from Sterling Plastics. Would make a great gift. Bright white on retail card. Hole for racks on card may be slightly torn and a price label was removed at some point.
Fedra Log Log - Closed duplex - Aug1968
Made in East Germany possibly by Veb Mantissa
Front Scale: K, A [ B, CI, C ] D, L
Back Scale: 27cm, S, ST, T, LL1, LL2, LL3, 10.75 inch
Back Slide: [Greek Alphabet]
Same as Staedtler Mars 544-52 Log Log
Sets of this model of slide rule are the most often requested by teachers for the ISRM Slide Rule Loaner Program for Schools. We send them out at our cost and they are returned at the end of the school term.
We have an excess of almost-new specimens in a clear hard case, Brief Instructions and care insert. These were sent for to a school and used once for a couple of days in a classroom setting. The manuals were folded up so they could be returned in the plastic shell.
Funds go to support the International Slide Rule Museum website and educational initiatives.