Fig. 8. The profiloscope, a new aid when measuring cross-sections. 
sources of error have been largely eliminated and the work has been 
made considerably more efficient. 
In connection with the cross-sectioning the detail maps required at 
bridges, traffic points and resting areas are drawn. Where the road 
project entails changes in the disposal of estate calling for adjustment, 
maps are drawn according to the norms applying for legal maps, and 
these are then used in connection with the subsequent surveying. 
The field-investigation of the terrain to ascertain in detail the nature 
of the ground, the occurrense of mountains etc. is added to the protocol 
and punched on a tape for the mass calculation. The calculation of 
masses is done entirely automatically with the help of the data machine 
Iacit EDB. 
It is as yet still too early to make any detailed pronouncement as to 
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