Valsts valodas centra izstrādātie inženierzinātņu, tehnikas, rūpniecības un būvniecības un arhitektūras termini

Konteksts: [..] The axis of a guiding device determines the vertical position of the measure. This device must ensure correct positioning of the measure; there must be no systematic errors of measurement resulting from the way in which it is constructed. The horizontal plane through the upper edge of the guiding device is the reference datum. [..]
Avots: Council Directive 71/349/EEC of 12 October 1971 on the approximation of the laws of the Member States relating to the calibration of the tanks of vessels