Meteorology
1985
Sea temperature mercury thermometer by G. H. Zeal Ltd., Merton, London, England, 1985. Mounted in brass protecting case, scale range (-50C to +35 degree C), Cat. No. 17175C.
Earth mercury thermometer, angled, 100mm insertion, by G. H. Zeal Ltd., Merton, London, England, 1985. Scale range (-5 to +50 degrees Centigrade), Cat. No. 17514.
Clinical Diagnosis
1940-1970
"Diska" clinical thermometer, diska bulb, lens stem, by G. H. Zeal, London, 1940-1970
Earth minimum thermometer, right-angled, red alcohol, 100mm insertion, by G. H. Zeal Ltd., Merton, London, England, 1985. Scale range (-5 to +50 degrees Centigrade), Cat. No. 17390.
Experimental Chemistry
1900-1980
Glass Baume hydrometer made by G H Zeal Ltd. 230mm long. Range 10 - 60. Lead weight and paper scale. In red cardboard box, 1900 - 1980.
Earth thermometer, right-angled, mercury, 50mm insertion, by G. H. Zeal Ltd., 1985. Cat.No. 17618, range -7 degree C to +38 degree C
Earth thermometer, right-angled, mercury, 200mm insertion, by G. H. Zeal Ltd., 1985. Cat.No. 17620, range -7 degree C to +38 degree C
Minimum spirit (alcohol) thermometer by G. H. Zeal Ltd., Merton, London, England, 1985. With plastic scale, range (-25C to +50 degree C), Cat. No. 17134.
Screen maximum mercury thermometer, sheathed, by G. H. Zeal Ltd., Merton, London, England, 1985. For use in weather station screen, scale range (-10 to +65 degrees Centigrade), Cat. No. 17064.
Earth thermometer, right-angled red spirit minimum, 50mm insertion, by G. H. Zeal Ltd., 1985. Cat.No. 17389, range -5 degree C to +50 degree C
Original packaging for Mason's wet and dry hygrometer by G. H. Zeal Ltd., London, 1985. Cat.No. 12340 PCBS, range -5 to +50°C (see note)
Earth thermometer, right-angled mercury maximum, 50mm insertion, by G. H. Zeal Ltd., 1985. Cat.No. 17379, range -5 degree C to +50 degree C
1981
"Repello" clinical thermometer, long bulb, lens stem, patented by G. H. Zeal in 1901, by G. H. Zeal Ltd, 1981
Screen alcohol thermometer, sheathed, by G. H. Zeal Ltd., Merton, London, England, 1985. Consists of an alcohol thermometer inside a glass sheath with large bulb, scale range (-50 to +25 degrees Centigrade), Cat. No. 17106.
Earth thermometer, right-angled mercury maximum, 200mm insertion, by G. H. Zeal Ltd., 1985. Cat.No. 17381, range -5 degree C to +50 degree C
Earth thermometer, right-angled red spirit minimum, 200mm insertion, by G. H. Zeal Ltd., 1985. Cat. No. 17391, range -5 degree C to +50 degree C
Screen mercury thermometer, sheathed, by G. H. Zeal Ltd., Merton, London, England, 1985. For use in weather station screen, scale range (-40 to +35 degrees Centigrade), Cat. No. 17146.
Solar radiation alcohol thermometer, by G. H. Zeal Ltd., Merton, London, England, 1985. Consists of an alcohol thermometer inside a glass sheath with large bulb, scale range (-10 to +95 degrees Centigrade), Cat. No. 17731.
1986
"Tempa-DOT" disposable thermometer, with associated literature (manufacturer's sample), by Zeal, London, 1986
