gs:
1:220000,1123100
x1=2434586.9
y1=346812.9
2:220000,1140000
x2=2433843.9
y2=500000.1
3:220000,1135900
x3=2433844
y3=498279

dx12=743
dy12=153187.1

dx23=0.1
dy23=1721

me:
x1=2314939.7
y1=466408.6
x2=2314939.7
y2=619583.4
x3=2314939.7
y3=617862.3

dx12=0
dy12=153174.8

dx23=0
dy23=1721.1

db=0,dl=1`29'
gx-mx=743
gy-my=12.3

db=0,dl=1'
gx-mx=0.1
gy-my=0.1