Kalibreeritud soonteristkülikpinnamõõtu kasutatakse soonteristkülikpinnaetalonina mõõtevahendi vertikaalse võimenduse, horisontaalse võimenduse ja X- ja Y-telje ristseisu kalibreerimiseks.
In a rectangular-groove material measure, four triangular grooves engraved on the surface of the material measure form a rectangle in the center of the material measure.
The calibrated rectangular groove material measure is used as a rectangular-groove measurement standard for calibrating the vertical amplification, the horizontal amplification. and the perpendicularity of both X- and Y-axes of the measuring instrument.
