考虑不含温度计的恒质量玻璃比重计。规定了刻度基准、参考温度、表面张力和调整和读数的参考水平。附录A列出了表面张力的标准类别，附录B介绍了采用密度作为刻度的首选基础。

Glass hydrometers of constant mass which do not incorporate a thermometer are considered. Basis of scale, reference temperature, surface tension and reference levels for adjustment and reading are specified. In annex A the standard categories of surface tension are tabled, and annex B deals with the adoption of density as preferred basis of scale.