Polarizer holder with fine adjustment

[Features]
· A holder consisting of the F62 type polarizer holder with additional fine adjustment functionality.
· Allows for 360° coarse movement with the clamp loosened. With the clamp tightened, it can perform micro adjustments on the micrometer head to ±4°.
· The F63-30N can be fitted with the F69polarizing prism adapter.
· The scale is structured in a way that allows zero point alignment, and so can be set to any angle from the reference angle.
· Calculating the optical axis of the rod stand.