This standard BS 701:1953 Specification for brewers' mash flask is classified in these ICS categories:
17.060 Measurement of volume, mass, density, viscosity
This British Standard specifies a flask suitable for certain requirements of the brewing industry, having two graduation marks on the neck corresponding to capacities of 500 and 515 ml.
A pear-shaped flask with graduation marks at 500 ml and 515 ml. Material, construction, dimensions, graduation, tolerances on capacity, inscriptions.