Surveyor 1 and C

adjustment advanced base airfield alidade alignment altitude approach zone azimuth balance line baseline boat sheet borrow pit celestial celestial equator celestial pole celestial sphere centerline central angle circle circular curve column computed construction control stations coordinates cross section deflection angle degree of curve depth drainage dredge duct earth earthwork equipment excavation fathometer feet field formula grade elevation grade line grade stakes gradient ground intersection intervals landing strip latitude layout length manhole mass diagram master sheet measured meridian method nautical charts necessary observations operations permafrost piles plane table planimeter plotted pole polyconic projection position radius record right ascension road runway scale Seabees shore shown in figure shows side slope stakes sounding journal soundings square stadia subchord subgrade surface survey party Surveyor tangent tion topographic transit traverse triangle triangulation stations types usually vertical curve volume waterfront