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[ artifact, History of Computing ] Fuller's Time Telegraph and Palmer's Computing Scale
Massachusetts: John E. Fuller, 1846. Hardcover. Very Good. 10 7/8 inches by 11 inches. 1/4 inches thick. Lacks the often missing cloth enclosure and printed instruction guide. Pressed paper construction with lithographed overlay, and edges with decorative thin leather borders with gilt decoration, the whole lacquered. Each "side" has a rotating volvelle with scales, and a recessed metal thumb on the disc which can be used for rotation. A metal rivet through the center holds the 2 discs in place. There is some minor loss to the gold stamped decorated black border finish, and one corner is bumped. There is an ink inscription 'Property of L. Derr' on the Fuller side. Both sides rotate as they should, but the Palmer side is curled outward from it's hole as if slightly too large. There is a fairly uniform darkening/soiling to both sides. Hardcover. Palmer's Computing Scale is one of the most desirable artifacts for those who collect early American Slide Rules and calculating devices. It was designed by Mr. Aaron Palmer and Mr. George G Smith in early 1841. A prototype was shown in early 1842, and later in Boston in the fall of 1843. Bobby Feazel notes that the Scale's first commercial appearance was in January 1844. This first circular rule had a front volvelle, and instructions printed on the rear. Feazel further notes Mr. John E. Fuller purchased the copyrights to the device from Palmer, and in 1845 copyrighted the Time Telegraph. This second device was affixed to the rear of Palmer's Computing Scale, and "how to" instructions were provided in a separate cloth case with foldout and instructions (not present here). There were various versions of this device produced from 1845 to 1871. Our example was published in 1845/46 (further differentiation of the date is impossible without the instruction book). This example has the Palmer slide rule showing a copyright of 1843, and the Fuller side copyright 1845. See Origins of Cyberspace #302 and Journal of the Oughtred Society Vol 3 No 1 and Vol 4 no 1 for more information.
      [Bookseller: Kuenzig Books, ABAA/ILAB]
Last Found On: 2014-07-31           Check availability:      IOBABooks    

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