Leica T105 User Manual page 9

Technical terms and abbreviations, contd.
Standing axis Line-of-sight
inclination error (Hz-
collimation)
Angle between The line-of-sight
plumb line and error is the
standing axis. deviation from
the perpendicular
between tilting
axis and line-of-
sight. This is
eleminated by
measuring in two
telescope
positions.
T105/T110-1.3.0en
c
i
V-index (Vertical
index error)
With horizontal
line-of-sight the
V-curcle reading
should be exactly
90°(100gon). The
deviation from
this values is
termed V-index
(i).
9
Plumb line / Zenith
Compensator
Direction of Point on the
gravity. The plumb line above
compensator the observer.
defines the
plumb line within
the instrument.
Graticule
Glass plate
within the
telescope with
evaporated
reticle and
distance marks.
Introduction