In 1909 Florian Cajori² described the components from which this instrument was developed as follows:

In 1909 Florian Cajori⁴ described these two instruments as follows:

Cajori⁶ describes these two instruments as follows:

Cajori⁸ describes these two instruments as follows:

Cajori⁹ describes these two instruments as follows:

80. J. Fuller’s Computing Telegraph.

81. J. Fuller’s Telegraph Computer.

http://meta-studies.net/pmwiki/uploads/PalmerCS1.jpg

http://meta-studies.net/pmwiki/uploads/PalmerCS.jpg

Condition is good with the leather bound sides only slightly marred and the red still bright. The metal control hole is slightly tarnished. The circular scales both move freely. Whilst there is some discoloration to the faces every number and all instructions printed on both sides are very readable.

The scale is described by Hook and Norman¹³ as:

The instrument is engraved volvelle (by George G. Smith) mounted on heavy cardboard with edges bound with gilt leather strips and is 11” square. It represents one of the earliest applications of the words “computing” to an instrument. At the time a computer usually referred to a person employed to do calculation.

This is issue 4 of the Palmer’s Computing Scale and bearing the inscription “Improved by Fuller” on one side. The original patent date was 1843 entered by Aaron Palmer of the clerks Office, Boston Mass.. But the Patent was purchased by Professor Fuller and improved by him. The Computing Scale bears scales for percentages, monetary transactions and interest.

Fuller’s Time Telegraph on the other side has a patent date of 1845, Boston, Mass. It enables the calculation of the number of days, weeks, or months to be determined between two given dates without calculations.

The instrument is engraved volvelle (by George G. Smith) mounted on heavy cardboard with edges bound with gilt leather strips and is 11” square. It represents one of the earliest applications of the words “computing” to an instrument. At the time a computer usually referred to a person employed to do calculation.

• Bobby Feazel, “Palmer’s Computing Scale”, Journal of the Oughtred Society, vol 3, no. 1, March 1994, p. 9.
• Bobby Feazel, “Palmer’s Computing Scale - Revisited”, Journal of the Oughtred Society, vol 4, no. 1, March, 1995, p. 5.

(:title 1847: Palmer's Computing Scale and Fuller's Time Telegraph:)

The scale is described by Hook and Norman as:

References

• John E. Fuller, Key to Palmer’s Computing Scale: Improvement to Palmer’s Endless Self-Computing Scale and Key, New York, 1846.

The sclae is described in by Hook et al as:

Condition is remarkably good with the leather bound sides only slightly marred and the red still bright. The metal control hole is only slightly tarnished. The circular scales both move freely. Whilst there is some discoloration to the faces every number and all instructions printed on both sides are very readable.

¹ Florian Cajori, The History of the Logarithmic Slide Rule, Engineering news publishing Company, USA, 1909, p. 47. (↑)

² Florian Cajori, The History of the Logarithmic Slide Rule, Engineering news publishing Company, USA, 1909, p. 47. (↑)

³ Florian Cajori, The History of the Logarithmic Slide Rule, Engineering news publishing Company, USA, 1909, p. 47. (↑)

⁴ Florian Cajori, The History of the Logarithmic Slide Rule, Engineering news publishing Company, USA, 1909, p. 47. (↑)

⁵ Florian Cajori, The History of the Logarithmic Slide Rule, Engineering news publishing Company, USA, 1909, p. (↑)

⁶ Florian Cajori, The History of the Logarithmic Slide Rule, Engineering news publishing Company, USA, 1909, p. 47. (↑)

⁷ Florian Cajori, “The History of the Logarithmic Slide Rule”, Engineering news publishing Company, USA, 1909, p. (↑)

⁸ Florian Cajori, The History of the Logarithmic Slide Rule, Engineering news publishing Company, USA, 1909, p. (↑)

⁹ Florian Cajori, “The History of the Logarithmic Slide Rule”, Engineering news publishing Company, USA, 1909, p. (↑)

¹⁰ see Fuller, Key to Fuller’s Computing Telegraph, 1846, above. (↑)

¹¹ see Fuller, Key to Palmer’s Computing Scale, 1846, above. (↑)

¹² Diana H. Hook and Jeremy M. Norman, Origins of Cyberspace: : A Library on the History of Computing and Computer-Related Telecommunications, Norman Publishing, 2002, pp. 269–70. (↑)

¹³ Diana H. Hook and Jeremy M. Norman, Origins of Cyberspace: : A Library on the History of Computing and Computer-Related Telecommunications, Norman Publishing, 2002, pp. 269–70. (↑)

¹⁴ see Fuller, Key to Fuller’s Computing Telegraph, 1846, above. (↑)

¹⁵ Diana H. Hook and Jeremy M. Norman, “Origins of Cyberspace: : A Library on the History of Computing and Computer-Related Telecommunications, Norman Publishing, 2002, pp. 269–70. (↑)

¹⁶ Diana H. Hook and Jeremy M. Norman, Origins of Cyberspace: : A Library on the History of Computing and Computer-Related Telecommunications, Norman Publishing, 2002, pp. 269–70. (↑)

¹⁷ Diana H. Hook and Jeremy M. Norman, “Origins of Cyberspace: : A Library on the History of Computing and Computer-Related Telecommunications, Norman Publishing, 2002, pp. 269–70. (↑)

(:title ~1846: Palmer's Computing Scale and Fuller's Time Telegraph:)

http://meta-studies.net/pmwiki/uploads/Palmer1.jpg

Palmer and the engraver George Smith began working on their design for an “endless computing scale” in early 1841. It was copyrighted in Boston in late 1843, and versions of the device continued to be produced until at least 1852. Palmer’s slide rule enjoyed only a limited success, largely because of poor marketing and the American public’s fear that use of the device “[would] tend to weaken the mind, by causing it to rely upon mere mechanism to make its numbered computations” (Fuller, Key to Fuller’s Computing Telegraph [1846], quoted in Feazel 1994, 15). Karpinski 1940, 439, points out that Palmer published A key to the endless self-computing scale, showing its application to the different rules of arithmetic (Rochester: P.S. Stoddard, 1842).

Palmer’s Computing Scale on one side with a patent date of 1843 entered by Aaron Palmer of the clerks Office, Boston Mass., as improved by Professor Fuller with scales for percentages, monetary transactions and interest.

Fuller’s Time Telegraph on the other side with a patent date of 1845, Boston, Mass., enabling the calculation of the number of days, weeks, or months to be determined between two given dates without calculations

Engraved volvelle (by George G. Smith) mounted on heavy cardboard, edges bound with gilt leather strips. 11” SQUARE

Palmer and the engraver George Smith began working on their design for
 an “endless computing scale” in early 1841. It was copyrighted in
 Boston in late 1843, and versions of the device continued to be
 produced until at least 1852. Palmer’s slide rule enjoyed only a
 limited success, largely because of poor marketing and the American
 public’s fear that use of the device “[would] tend to weaken the mind,
 by causing it to rely upon mere mechanism to make its numbered
 computations” (Fuller, Key to Fuller’s Computing Telegraph [1846],
 quoted in Feazel 1994, 15). Karpinski 1940, 439, points out that
 Palmer published A key to the endless self-computing scale, showing
 its application to the different rules of arithmetic (Rochester: P.S.
 Stoddard, 1842). 

Condition is remarkably good with the leather bound sides only slightly marred and the red still bright. The metal control hole is only slightly tarnished. The circular scales both move freely. Whilst there is some discoloration to the faces every number and all instructions printed on both sides are very readable.