Leica TPS1200 series Technical Reference Manual page 1028

Reference Plane & Face Scan
Vertical plane The axis of the vertical reference plane are:
X axis: Horizontal and parallel to the plane; X axis starts in point defined as origin
point
Z axis: Parallel to the instrument zenith and parallel to the plane
Y axis: Perpendicular to the plane; increases in the direction as defined
Offsets are applied in the direction of the Y axis.
a
Z
Y Y
P1
TPS12_163
a Height
b Easting
N Northing
P1 Origin of plane
P2 Point of plane
X X axis of plane
Y Y axis of plane
Z Z axis of plane
TPS1200
a
P2
X
X
b
TPS12_163a
a
b
N
P1 Origin of plane
P2 Point of plane
X
Y
Z
Z
P1
Y
Height
Easting
Northing
X axis of plane
Y axis of plane
Z axis of plane
1028
P2
b