Reticule - ADA INSTRUMENTS Ruber-X32 Operating Manual

RUBER-X32
There is another way to check the compensator.
Make the bubble into the center of circular level.
When you see clear object, hit slightly the tripod legs or the instrument case. Horizontal line should twitch slightly and
back to the previous place.

5.5. RETICULE

1) Set up the instrument between A and B points.
Take readings "a1" and "b1". (Pic.10)
2) Set up the instrument at 2 m off the point A. Take readings "a2" and "b2"
(Pic.11).
Let the telescope be pointing at front staff.
Pic.10
Compute
b2'=a23-(a1-b1)
if b2'=b2, there is no need in adjustment.
If the difference between b2' and b2 is significant, make the adjustment
in following order:
Pic.11
10
MEASUREMENT FOUNDATION