State system for ensuring the uniformity of measurements. State primary standard and all-union verification schedule for means of measurements of constant linear acceleration of a solid body in the range from 10in minus 3 degree up to 2x10 in 2 degree m/s'2
Ophthalmic optics. Uncut finished spectacle lenses. Part 5. Minimum requirements for spectacle lens surfaces claimed to be abrasion-resistant. Test methods
