The proceeding according I© this last rule permits to introduce the 
plotting scale of the stereograms« 
The sequence of operations of orientation of next air photographs 
according to the new method - in which it is not a question of the pla- 
ne or spatial aarotriangulstion » is the following one: 
1/ with the transfer of the right photograph /with the plane-holder/ 
to the left side of the autograph w@ introduce the value of 6J 
of this photograph on the left side of the autograph and then 
we proceed with the relative orientation of the new pair of photo» 
graphs without changing the CJ j 
2/ we compute and introduce ^ 0 g* according to the 2 nd rulei 
3/ we introduce the level of reference» that is we set the glass 
scale on the corresponding Z value of the point and we introduce 
the base of the photograph /which corresponds to the introducing 
of the scale to the stereogram/; 
4/ we check the scale and levelling of the stereogram and we correct 
the small deviations» 
The operations under 1/ form the eycle and may be performed by the 
well-known methods of the relative orientation« The operations under 2/ 
and 3/ reduce the model to the proper level and to the scale approximate 
to this of the map to be plotted /the admissible discrepancies on the 
height points - ^qq H; the discrepancies on the points of situation 
- lP#°5 mm in the model scale at H ■ 230 wmj 
In the case of space or plane aerotriangulatlon, performed on the 
Wild A8 autographs« in addiation to the three rules mentionned above the 
rule must be used § this rule gives the relation between the ele 
ments of "X ” of the air photograph placed on the right side of the the 
autograph />6"/ and after on the left side /XV - and the angle Of , 
which is computed from the transformation of machine coordinates to the