356 



Forestry Quarterly. 



that one of the chief objections to the use of the hand level in 

 reconnaissance is in the matter of speed. However, this ob- 

 jection can be removed if the compassman avoids doing work 



Fiyt/rc Tu/o. 



/i Field Method oF Tcatinj the^AJjuitmtnt 

 and oF Adjusting the. flbmj Le.ve.1. 



r"e«t.— Ciamf a.± C' or O/^. 



/. Cut a notch in Trctt */ a^ fiott-h fl. Holctina -Ihe initri^mtn't 



perFcc-ti-j Ic^-e/ S'jhi to Tree ^2. u/hare -ihn ustrt atnkei 



Tre€.*A Cut a no1 her notch B 



a., firocs^d to 77-ec *■& a/fd hoidiiyiht. tnifrvmeTt perfcct/ji 

 /e^e.1 sighi- batik -to Tree */. Tf ihe Ime of nyht tfpofi 

 Tree */ />»»« ftotch 3 Jcei net shri Ae notch A 



ihe lei/el a rat in aafjUi't tusn't. Alark-lhc 

 point u/herc Ihe J^^'^ from notch d J^rikei 

 Tree */ U"-/^ a no1f.ii C. 



7^eC5 about /OO afJort 



To ftdjuitl— 



I. Meoivre -/he rfu-Cotcc 6etwt.e.n -/he. notcha A-C 

 Cut a n^uj ndlcd "o" half lu an be-t-ureen «o'Xr/ics 

 /7-C 

 2 Proceed -i-o 5 and adji/jt lo'iih '/he adjiti+m^ 

 jc'eit/i sheuin m f-^ure One. cf/t-fU '/he. bubble, 

 /i dead cen'/'^r u/hi/e. Si^^'t''']^ from Bto 

 'O'. A hue Co»rt^c^-mj tlo+thei ond o" 

 /s a 



^yoid ntoyiM ihz. mden arm iF ihe arm n rJampet^ 

 "to -Jhe. ^rad<feite.d arc. 

 unnecessary for the purposes of sketching topography. It must 

 be strictly understood by the compassman that his absolute ele- 

 vation along the strip line is of no consequence in making his 

 form line field sketch. He must work with speed and he has not 

 the time to perform the numerous arithmetical calculations ac- 

 curately to determine his absolute elevation on the line. 



Running the strip, the compassman enters the precise elevations 

 of the base line stake on the map sheet; he determines the line 

 of the strip with the compass ; he then sights parallel to the slope 

 of the ground along the compass line with the Abney and enters 



