This standard applies to vertical optical length meters of types DVO (IZV-1 and IZV-2) and DVE (IZV-3) in accordance with GOST 14028-68 and establishes
GOST 8.114-1974 history
1974GOST 8.114-1974 State system for ensuring the uniformity of measurements. Vertical optical length comparators. Methods an means of verification