Bryson's comparative thermometer with quadruple graduations on a porcelain scale, Edinburgh, c. 1850

Thermometer, brass spiral strip supported at upper end by vertical brass arm, iron pointer attached to the lower end lies above ungraduated brass ring resting on three feet, c. 1830, one of collection of apparatus and instruments from Edinburgh University used by Professors Black, Hope and Gregory

Thermometer, alcohol and mercury, recording maximum and minimum temperatures, invented by James Six of Canterbury in 1780, probably made by L. Casella, London, c. 1900

Spirit thermometer, M.O. 48, reading from -90 to +50 degrees fahrenheit, used on the 1902 Scottish Antarctic Expedition, 1902 made by Negretti and Zambra, London

Glass thermometer with paper scale, reading from -10 to 50 degrees centigrade

Glass thermometer with paper scale, reading from -10 to 50 degrees centigrade

Three spirit thermometers, Centigrade, Fahrenheit and Reaumur, on brass stand, made by Stevenson of Edinburgh

Metallic thermometer, silver pocket watch style, showing Fahrenheit and Reaumur scales and maximum and minimum temperature, made by Freres Melly of Paris, c. 1780

Three hundred and sixty three aerometrical beads, two slide-rules, one thermometer, six glass rods and an instruction book, all in a drawer of a mahogany box, and made by J. Lovi of Edinburgh, c. 1810

Mercury-glass thermometer, ivory scale and brass cap, signed and made by Jesse Ramsden of London, c. 1770

Thermometer, 0 - 112 degrees Fahrenheit, signed by H. Prins of Amsterdam, c. 1750

Thermometer, 0 - 240 degrees Fahrenheit, signed by Alexander Wilson of Glasgow, 1769

Spirit thermometer, 1 - 50 degrees Florentine, made by members of the Accademia del Cimento of Florence, Italy, c. 1660

Pocket thermometer, bi-metallic, with Reaumur and Fahrenheit scales, in glass-covered case, signed and made by Johann Holtzmann of Vienna, c. 1775

Replica of clinical thermometer, frog-shaped of glass with liquid and coloured beads inside, original by the Accademia del Cimento of Florence in 17th century, replica made 20th century

Spirit minimum thermometer, ceramic scale on wood and enamel base, used at the Ben Nevis Observatory, made by H. Negretti and Zambra of London, 1883 - 1904