132 A MANUAL FOR NORTHERN WOODSMEN 



Two miles per day are readily covered by two men, 

 drawing topography carefully and estimating a good stand 

 of timber. Not only has cruising work been done by this 

 method, but control work as well, using more care and two 

 instruments. This last use of the method requires making 

 circuits several miles in length around either subdivisions of 



tact*. 



land or topographic areas. For cruising work the method 

 is carried at farthest two miles to a tie point. Errors in 

 direction and distance are seldom over \ chain per mile 

 and the average error in height work is 10 feet. In very 

 brushy country some tricks of the trade are introduced in 

 the interest of speed, as sighting to the flash of a mirror or 

 the metal note holder of the cruiser. In country of long 



