PRISMATIC COMPASS A compass with a prism attached so that the compass card can be read at the same time as the compass is directed into the line of sight to a distance point.
(a prism; attached; ) (the compass card; can be read; T:at the same time; as the compass is directed into the line of sight to a distance point) (the compass; is directed; into the line of sight)
a prism the compass card the compass
attached can be read is directed
T:at the same time as the compass is directed into the line of sight to a distance point
into the line of sight