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Master Test Plates are available in pairs
consisting of a convex and concave component
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Material: |
Fine
Annealed Pyrex® |
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Radius
Tolerance: |
Dependent on radius and diameter.
Generally 0.1% |
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Irregularity: |
1/10 of
a wave for diameters < 4.0 inches |
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1/5 of a
wave for larger diameters |
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Surface
Quality: |
80-50
Scratch and Dig except that light
grey is acceptable |
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Clear
Aperture: |
90% of
diameter |
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Hyperhemispheres (convex = hyperhemisphere)
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1.000 to
2.499 mm radius |
$410.00 |
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2.500 to
24.999 mm radius |
$381.00 |
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25.000
to 30.000 mm radius |
$431.00 |
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Other Master Test Glasses
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Diameter (inches) |
Radius (mm) |
Price |
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1.75 or
smaller |
25.00
and up |
$400.00 |
|
2.00 to
2.45 |
40.00
and up |
$410.00 |
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2.50 to
2.95 |
60.00
and up |
$420.00 |
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3.00 to
3.45 |
80.00
and up |
$455.00 |
|
3.50 to
3.95 |
90.00
and up |
$495.00 |
|
4.00 to
4.95 |
110.00
and up |
$570.00 |
|
5.00 to
5.95 |
150.00
and up |
$795.00 |
|
6.00 |
200.00
and up |
$1050.00 |
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