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Optical Square/Penta Prism
Penta Prism is also called an Optical Square and is used for checking squareness of Machine Vertical Column to the horizontal bed. Also useful in combination with Standard Reflector for Flatness of Surface Table.
| Total Angle Deviation | Precision : < 5 arc secs, Standard: < 30 arc secs |
| Mount Dimensions | 100 x 100 x 100 mm, 100 x 100 x 50 mm |
| Prism Aperture | 30 mm |
| Prism material | Bk-7 |
| Surface Quality | Lambda/6 Flatness |