Con el fin de reducir las deformaciones en el sentido Este-Oeste a valores insensibles a los usos cartográficos de precisión, Krüger redujo el ancho de las fajas a 3° de longitud (1° 30’ a la izquierda y 1° 30’ a la derecha del meridiano central de cada faja)y para esos meridianos centrales eligió aquellos cuyos números de grados son múltiples de 3° de longitud. En el caso de la República Argentina, los meridianos centrales tienen los siguientes valores: -72°, -69°, -66°, -63°, -60°,-57° y -54°.
Fajas y meridianos de la proyección Gauss-Kruger para la Argentina
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