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Metric Polarizer Mounts feature secure optic retainer, lever arm for smooth rotation, locking knob for repeatability and 360° scaled vernier. Posts and Post Holders are required for mounting to a breadboard. Micrometer version provides fine adjustment. Metric Polarizer Mounts, for Micrometer Driven version only: total travel of the 0.25mm pitch fine adjustment screw is 10°. Total angular rotation per rotation of knob is 20 minutes. *40mm total including 34mm diameter mounting tube.
| Diameter of Compatible Optics D | Clear Aperture CA | Drive Type | Mount Diameter A | Mount Thickness B | C | E | Stock No. |
| Standard | |||||||
| 20.0 | 17 | Standard | 50 | 19 | 34 | 24.0 | #55-454 |
| 25.4 | 22 | Micrometer | 69 | - | - | 33.5 | #55-011 |
| 25.4 | 22 | Standard | 60 | 20 | 42 | 29.5 | #55-010 |
| 30.0 | 27 | Micrometer | 69 | - | - | 33.5 | #57-570 |
| 30.0 | 27 | Standard | 60 | 20 | 42 | 29.5 | #57-569 |
| 50.0 | 47 | Micrometer | 89 | - | - | 43.5 | #56-329 |
| 50.0 | 47 | Standard | 80 | 20 | 62 | 39.5 | #55-455 |
| Glan-Thompson Polarizer Mounts | |||||||
| 25.4 | 18 | Micrometer | 69 | -* | - | 33.5 | #57-572 |
| 25.4 | 18 | Standard | 60 | 20* | 42 | 29.5 | #57-571 |
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