prismatic compass

释义

棱镜罗经，三棱镜罗盘仪；

Syllabus of Engineering Subjects
CALIBRATION OF PRISMATIC COMPASSES
Ordnance maintenance : prismatic compass, M1918.
Ordnance maintenance : prismatic compass, M1918.
Improvements in prismatic compasses with special reference to the Creagh-Osborne patent compass
The Use of the Prismatic Compass in Mine Surveying
Archaeological Methods: Reading a Compass
The Carnegie Institution marine collimating compass
On the manufacture and testing of prismatic and other compasses
CHAPTER VIII. UNDERGROUND SURVEYING.