HAMAR LASER STEALTH Series, General Training Manual

Page: 27 / 113

23
Laser Buck-in
Laser buck-in refers to the adjustment of a laser plane or line to be parallel to the surface being measured
(a tabletop, a surface plate, or a way surface). Three points are required to buck-in a laser plane to a
reference surface. Two points are needed to buck-in a straight-line laser to a reference line (i.e.,
centerline).
Normal versus Remote Buck-In
There are two procedures
for bucking-in the laser:
•
Close Buck-in
•
Remote Buck-in
The procedure used depends
on the relationship of two
distances: the distance
between the laser unit and
the first target, and the
distance between the first
and second targets. The
normal buck-in is easier; the
remote buck-in is useful in
situations where the normal
method would be nearly
impossible.
Figure 14 illustrates the
general rule for determining
the buck-in method to use.
L1 is the distance from the
Laser to the first Target
location. L2 is the distance
between the 2 targets. If L1
< 1/10 * L2, the Close
(normal) Buck-In procedure
is used. If L1 > 1/10 * L2, the Remote Buck-In
procedure should be used. When in doubt, or if the
close procedure is not producing good results, use
the remote procedure.
Note:
Read15 and Read16 PDA software programs now have a 2-Point Buck-In Wizard to aid you in doing a
remote buck-in. Please see those manuals for the procedure.
Normal Buck-In
The normal buck-in procedure can be remembered by the rule, “ Zero Near, Tilt Far.” Buck in the laser
beam by zeroing the target on near reference point, and then "point" (tilt) the laser beam using the
Figure 14 – Close vs. Remote Buck-in