| Product code | Size(in mm) |
| VLN1065a/1 | 12.5X12.5 |
| VLN1065a/2 | 15X15 |
| VLN1065a/3 | 20X20 |
| VLN1065a/4 | 25X25 |
| Product code | Size (in mm) |
| VLN1065b/1 | 12.5X12.5 |
| VLN1065b/2 | 15X15 |
| VLN1065b/3 | 18×18 |
| VLN1065b/4 | 25X25 |
Calaite/ Quartz Prism equilaternal (A) with opticals axis parallel to refracting edge.
(B) with opticals axis parallel to base when adjusted to minimum deviation.
| Product code | Size(in mm) |
| VLN1065a/1 | 12.5X12.5 |
| VLN1065a/2 | 15X15 |
| VLN1065a/3 | 20X20 |
| VLN1065a/4 | 25X25 |
| Product code | Size (in mm) |
| VLN1065b/1 | 12.5X12.5 |
| VLN1065b/2 | 15X15 |
| VLN1065b/3 | 18×18 |
| VLN1065b/4 | 25X25 |