Early science in Cambridge / by R.T. Gunther.

  • Gunther, R. T. (Robert Theodore), 1869-1940.
Date:
1937
Catalogue details

Licence: In copyright

Credit: Early science in Cambridge / by R.T. Gunther. Source: Wellcome Collection.

    86/650 (page 54)
    Back. Scales of ordinary feet and inches and of Sea feet and inches. ‘Hou[rs], Lat, In Mer, Rum, Cho, Sin, Sec, Tan, S[emi] Tan, M: Lon/ 70. 12-inch Gauger’s Slide Rule. c. 1816. Cavendish Laboratory. Ivory: by ‘Bate, London/ Inscribed: ‘Per cent under Proof’ ‘Sikes’s Proof P’ ‘Over Proof’ ‘Indication’. On back: ‘Thermometer scale’. ‘Percent over Proof.’ 71-74. 12-inch Gauger’s Slide Rules. 1816. Cavendish Laboratory. Boxwood: Four examples inscribed by Wollaston ‘Original’ and ‘From Excise Office July 1816’ (a) Stamped ‘Per cent below R’ and ‘above R’. (&) » „ O’ „ D’. (c) >> ,, over Proof’ ,, Proof’. 75. 12-inch Slide Rule for Exchanges, Bullion, &c. 1813. Cavendish Laboratory. Showing Percentages above and below par. Published by W. Cary 182 Strand. Apr. 1, 1813. Among the foreign exchanges given are Sicily, Pence per Oz. Lisbon, Rio Janeiro, Pence p. Milree. Leghorn, Genoa, Pence p. Pezza. Malta, Pence p. Dollar of 2J Scudi. Madras, Pence p. Pagoda. Naples, Pence p. Ducat. Spain, Gibraltar, Pence p. Dollar. Russia, Pence p. Ruble. Geneva, Pence p. Ecu. Bengal, Pence p. Sic Rupee. Bomby, Pence p. Rupee. Above par. On the Back Wollaston has affixed a paper inscribed with a Timber Scale for estimating quantities of Battens, Deals and Planks