The middle point of the Dutch grid reference system is situated in the tower.
From origin the tower spin was the middle of the grid with x = 0 and y = 0.
This grid system was set up in the period 1885-1904.
The coördinates were also called Amersfoort coördinates.
The Zero-point was moved in the period 1960-1978, it moved 155 km Westwards and 463 km Southwards (120 km Southeast of Paris, 1 km East of La Celle-Saint-Cyr).
The coördinates of the middle point since then are X = 155 000, Y = 463 000.
Advantage of this new Zero-point is that there are no negative coördinates anymore and the X values differ from the Y values so mistakes shall not occur anymore.
The middle point of the Dutch grid reference system is situated in the tower. From origin the tower spin was the middle of the grid with x = 0 and y = 0. This grid system was set up in the period 1885-1904. The coördinates were also called Amersfoort coördinates. The Zero-point was moved in the period 1960-1978, it moved 155 km Westwards and 463 km Southwards (120 km Southeast of Paris, 1 km East of La Celle-Saint-Cyr). The coördinates of the middle point since then are X = 155 000, Y = 463 000. Advantage of this new Zero-point is that there are no negative coördinates anymore and the X values differ from the Y values so mistakes shall not occur anymore.
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