PART I. LAND SURVEYING 



SECTION I 1 in SIKYKYOR'S COMPASS 



I. I !.. Instrument 



\dju>tinrnt> >f the Compass 



Keepiiur the CompUB in Order 



Si. IIOM II 'I'm: MAGNETIC NEEDLE 7 



II. M I:\.SIKKMKNT OF DISTANCE 



i. UK Surveyor's Chain 



. Tape 10 



3. Marking I 'ins 



4. Chaining Practice . . 



5. Measuring Inaccessible Lines 



6. Stadia Measurement 



7. Units of Distance and Area 



SECTION IV. SURVEYING PRACTICE 



1. (tunning a Compass Line (Backsight, Picketing, 



Needle) 20 



2. Try-Li. M-S 22 



3. Marking Lines and Corners 23 



4. Original Surveys ;:nd Kesurveys ! 



5. Age of Spots or Blazes 26 



6. Notes 28 



7. Party and Cost 28 



SECTION V. COMPUTATION AND OFFICE WORK .... 31 



averse 31 



37 



3. Plotting 40 



' ' i l'>i \i;i\, OP LINKS 43 



\ll. < K OHIAIMV. MM. MI:I;IDIVX .... 51 

 SECTION VI 11 THE UNITED STATES PUBLIC LAND 



SURVEYS 60 



