Hydrometers, BS718 series. Density g/ml at 20oC. Adjusted for liquids of low surface tension. Series M50 (50o range). Length 270mm. Subdivision 0.001.
Hydrometers, BS718 series. Density g/ml at 20oC. Adjusted for liquids of low surface tension. Series M50 (50o range). Length 270mm. Subdivision 0.001.