| Type |
.01 |
.02 |
.03 |
| Size |
25x25mm |
32x32mm |
38x38mm |
| a. |
Borosilicate crown glass |
|
1.51 R.I. App. |
| b. |
Dense flint glass |
|
1.62 R.I. App. |
| c. |
Extra dense flint glass |
|
1.65 R.I. App. |
| d. |
Double extra dense flint glass |
|
1.70 R.I. App. |
Full Specifications:
| Size | 25 x 25mm, 32 x 32mm, 38 x 38mm. |