prismatic compass การใช้

• A prismatic compass and local map are essential companions to aid navigation.
• A prismatic compass and local map are essential companions to aid route finding.
• Every weekend for over four months, Rovers traveled out to the area with prismatic compasses and theodolites to survey this area.
• A " bearing compass " is a magnetic compass mounted in such a way that it allows the taking of prismatic compass ".
• The name " Prismatic compass " is given to it because it essentially consists of a prism which is used for taking observations more accurately.
• According to Carre駉 " et al . " ( 2002 ), the oldest biblio-cartographic reference to the mountain is likely that of Marie Penelope Rose Clementi ( wife of Cecil Clementi ), " circa " 1920, who recounted how its location was determined with a prismatic compass during an English expedition of 1915.