Glass urinometer marked Poulton, Self & Lee Ltd, London...
Glass urinometer marked Poulton, Self & Lee Ltd, London E12.
Glass urinometer marked Poulton, Self & Lee Ltd, London E12. 131mm long. Range 1000 - 1060. Lead (embedded in red wax) weight and paper scale. In black cardboard tube, 1930 -1980.
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