Leica FlexLine TS02 User Manual page 299

Reticle
Line-of-sight error
(horizontal
collimation)
Vertical index error
Glossary
Glass plate within the telescope with reticle.
TS0X_071
The line-of-sight error (c) is the deviation from the perpendicular
c
between the tilting axis and line of sight. This could be eliminated
by measuring in both faces.
TS0X_005
With a horizontal line of sight the vertical circle reading should be
i
exactly 90°(100 gon). The deviation from this value is termed the
Vertical index error (i).
TS0X_006
FlexLine, 299