When the manufacturer of the best tripod heads and of technical cameras of the highest mechanical precision, too, sets about building a geared tripod head, then a 3-way tilt head like the Cube comes about ...

The ARCA-SWISS Cube is without question the most highly developed and most precise tripod head on the market. 

Why is that so much more important today than it was in the past? 
Whereas photographers in the past had film that was at least 12 cm wide,
today they have a sensor that measures a maximum of 49 mm:
that means their work must be 2.5 times more exact. In order
to be able to work efficiently with horizontal and vertical lines, 
which are crucial in architectural and still-life photography, 
it is essential to be able to move your camera with an accuracy of
millimetres. 

Every photographer to whom I have lent the Cube has, 
without exception, bought it immediately or wants to get it as soon as possible.