Compass Survey Complete in 3D | Bearing, WCB vs QB, Local Attraction + Numericals | RRB JE SSC JE

Compass Survey explained completely in 3D animation – in one video 🧭 Compass Surveying full concept for RRB JE, SSC JE, UPSSSC JE, state JE, Diploma and B.Tech Civil Engineering students. This video covers compass survey principle (traversing), meridian, bearing, whole circle bearing (WCB), quadrantal bearing (QB), reduced bearing, fore bearing and back bearing, prismatic compass and surveyor's compass with all parts, temporary adjustments, magnetic declination, dip of magnetic needle, local attraction and its correction, compass traverse field procedure, closing error, Bowditch rule and solved numericals – all with 3D animation, step by step. ⏱️ Timestamps: 00:00 Introduction 00:48 What is Compass Survey + Principle of Traversing (open & closed traverse) 01:53 Where Compass Survey is suitable 02:24 Meridian – True, Magnetic and Arbitrary 03:03 Bearing – Whole Circle Bearing (WCB) and Quadrantal Bearing (QB) 04:05 WCB to Reduced Bearing conversion 04:32 Fore Bearing and Back Bearing (BB = FB ± 180°) 05:31 Prismatic Compass – parts and working 06:41 Surveyor's Compass + comparison table 07:13 Temporary adjustments – centering, levelling, focusing 07:35 Magnetic Declination, variations, isogonic & agonic lines, dip 08:47 Local Attraction – detection and correction 09:53 Field procedure of compass traverse + closing error (Bowditch rule) 10:58 Numericals – WCB to RB, Back Bearing, Declination, Local Attraction 14:12 Summary 📌 Connect with me: 📸 Instagram →   / hemantmandal.civil   Daily civil engineering posts, reels aur quick notes ✈️ Telegram → https://t.me/hemantmandalcivil Handwritten notes, PDFs aur exam updates ▶️ YouTube →    / @hemantmandalcivil   Full subject videos in 3D animation 📩 Full subject notes ke liye Instagram par DM karo 🔑 Keywords: compass survey, compass surveying, compass survey in hindi, compass survey 3d, compass survey civil engineering, compass survey rrb je, compass survey ssc je, surveying rrb je, surveying ssc je, surveying civil engineering, bearing in surveying, whole circle bearing, quadrantal bearing, reduced bearing, wcb to rb conversion, fore bearing and back bearing, prismatic compass, surveyor's compass, prismatic compass vs surveyor's compass, magnetic declination, dip of needle, local attraction in compass survey, local attraction numerical, traversing in surveying, open traverse closed traverse, closing error, bowditch rule, meridian true magnetic arbitrary, compass survey numericals, surveying numericals, surveying one shot, surveying lecture, civil engineering je exam, je civil surveying, diploma civil surveying, btech civil surveying, hemant mandal civil #CompassSurvey #Surveying #CivilEngineering #RRBJE #SSCJE #JEExam #Bearing #WholeCircleBearing #QuadrantalBearing #ForeBearing #BackBearing #PrismaticCompass #SurveyorsCompas