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Redwood viscometer Serial No. 2730 made by Griffin, London, with 4 thermometers and a 50cc round bottom flask and a fitted metal mounting, all contained in a fitted, wooden carrying case. Also in the case 2 Institute of Petroleum Guidelines on use, IP 70/62 and IP 72/58. (Est. date 1930-1960).
Redwood viscometer Serial No. 2730 made by Griffin, London, with 4 thermometers and a 50cc round bottom flask and a fitted metal mounting, all contained in a fitted, wooden carrying case. Also in the case 2 Institute of Petroleum Guidelines on use, IP 70/62 and IP 72/58. (Est. date 1930-1960).
Redwood viscometer Serial No. 2730 made by Griffin, London, with 4 thermometers and a 50cc round bottom flask and a fitted metal mounting, all contained in a fitted, wooden carrying case. Also in the case 2 Institute of Petroleum Guidelines on use, IP 70/62 and IP 72/58. (Est. date 1930-1960).
