Double Concave Lenses, Spherical (LT-2002)
Made from optically worked glass, ground edges.
Focal Length (cm)
Dia mm
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
A
38
5
10
15
20
25
30
50
100
B
C
75
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The project will upgrade the majority of the science and research labs, which the school’s proposal said were outdated
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