The short screw whose divided milled head is shifts the zero of the micrometer by pushing, without turning, the short sliding rod whose flat end forms the point d'appui of the micrometer screw at I.
681 seq.) may be taken as indicating its military importance for an attack on the Acropolis; the Persians used it as a point d'appui for their assault.
It is an important fortress, forming the principal point d'appui of the line of defensive inundations called the "New Holland Water Line," in addition to its position as a railway centre.
- Hellenism secured by the Macedonian conquest points d'appui from the Mediterranean to India, and brought the system of commerce and intercourse into Greek hands.
They begin by more or less desultory raids, in the course of which they seize upon some island, which they generally use as an arsenal or point d'appui for attacks on the mainland.
Here the island point d'appui was Noirmoutier, an island with an abbey at the Loire mouth.
The Church had shrunk considerably since the 18th century, but in the first decade of the 10th showed signs of revival as a point d'appui for Catholics restive under the yoke of the ultramontanism dominant in the Roman Church.