The instrument enclosure of NASA's Near-Earth Object Surveyor was prepared for critical environmental tests inside the ...

They were made of brass, steel, aluminum, wood, rubber, and plastic, and they were sometimes marked with scales or combined with other drawing instruments. Draftsmen, surveyors, navigators, military ...

Parallel rules help draftsmen, surveyors, cartographers, architects, and navigators draw accurate parallel lines. The instrument comes in two main forms: two rectangular straight edges connected by ...