202 FOEESTKY WORK 



stretched out while the assistant goes back for the pins. 

 No. 1 pin is then put in at the end of the eleventh chain. 



The pins should be counted at every change, to make 

 sure none has been dropped. 



The line must not be measured parallel with the sur- 

 face of the groimd, but the chain must always be held 

 level. 



When working downhill the assistant should hold his 

 end up at a level with that held by the surveyor, and 

 when working uphill the surveyor must hold his end up. 



When measuring steep hillsides, it is better to use a 

 shorter unit of measurement than the chain to ensure the 

 tape being held level. The offset staffs should be painted 

 in black-and-white bands, to be easily seen at a distance. 



