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9. Rotate the product
clockwise so that
the forward laser
beam passes
through marks d1
on the table and
d2 on wall D.
10. Mark the centre of
the side vertical
beam at two
locations, point a3
on the table near
point a1 and point
a4 on wall A near
point a2.
11. Measure the distances:
∆1= from a1 to a3
∆2= from a2 to a4
12. The diff erence ∆2 – ∆1 should be no more than 4 mm.
For sign-off review, sent 4 Aug 2023.
a4
a2
A
90°
a1
a3
d2
D
d1
25
B
b2
C
b1
c1
c2
25
12
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