FIELD: precision measurement technology. SUBSTANCE: mass standard is made in form of solid body manufactured from paramagnetic and/or dielectric materials at low temperature linear expansion coefficient and high hardness and wear- resistance. Body of standard is provided with sealed cavity inside which part of material of standard changeable in mass is placed. Volume of standard is equal to ratio of nominal value of mass of standard to preset magnitude of density and total mass of materials from which standard is made is equal to nominal value of standard. Spherical form of standard is most suitable. EFFECT: improved properties. 2 cl, 4 dwg
