118 A MANUAL FOR NORTHERN WOODSMEN 
for one man. Any board to hold the sheet will do, a small 
compass being used to orient it. By the time this work is 
done, a practical man may, in addition, have learned 
about all he wants to know regarding the timber. 
I-1-1-1-1-1 
500 400 300 200 100 0 500 
5. Since the lot is to be operated from a portable mill set 
near its northeast corner, go over the lot with the map in 
hand and see that the topographic difficulties and oppor¬ 
tunities are correctly represented. 
