Glass urine specific gravity measure.Cream coloured manufacturers box labelled with a pale blue and cream label: "Diabetes Urinometer and Specimen Tube. Manufacturer Precision Glass Instrument Co, Melbourne". Blown glass urinometer used to measure the specific gravity of urine. It consists of 3 parts: I. The float: is the air containing part II. Weight: the lower end of urinometer (metal ball bearings) III. Stem- Has calibrations with numbers marked to measure the specific gravity Missing urine holding specimen tubeHospital type diabetes urinometer 60 degrees F Precision Glass Instrument Co. Melb. Measurements on stem from 000 to 030 urine specific gravity measure, urine testing