LaserLine QUAD 4000, Owner'S Manual

Page: 14 / 16

12 QUAD 4000
Using the Quad 4000 and
the LineLokr, strike a line at
least 200 feet (400+ is better)
and mark both ends and
midway point
NOTE: Always use the
finest “on-line” setting
on your laser detector for
establishing all your line
reference points in steps
1 through 5.
NOTE: Angle error read at points A &
B will be 2 times the true error. (i.e., 1/4
inch off at point A would actually be 1/8
in 200 feet, or 1/16 in 100 feet.)
LINELOKR
A
C
B
400
QUAD
Set Quad at middle
point on point (C)
Relock to LineLokr at
point (B)
A
C
B
LINELOKR
200
200
QUAD
1
LINELOKR
A
C D
B
200
200
200
QUAD
From (C) mid point, go out 200 feet
to left and mark your 90° at point
(D) using a laser detector
3
A
C D
B
QUAD LINELOKR
Check here
Check here
Using a laser detector, go to (A) and (B) and measure where the
laser is relative to your (A) and (B) points. This will indicate your
square accuracy over the distance from the Quad. (i.e. at 200 feet
1/8 inch= 1/16 per hundred or 10 arc seconds accuracy)
5
A
C D
B
QUAD LINELOKR
Move LineLokr to (D) point.
Rotate Quad aiming to LineLokr
and lock on (Be sure the Quad
is still over the point!)
4
2
NOTE:
Insure that you are precisely establishing your points and that you are precisely setting up over those
points in order to obtain maximum accuracy for this field calibration check.
!
CHECKING FOR SQUARE ACCURACY OF THE QUAD 4000