Square-Tube Front Attachment FGQ-6
The square-tube auxiliary telescope has a single-reticle eyepiece for aiming and measurement during optical-instrument assembly and alignment. It measures guideway straightness, precision surface-plate flatness, reference-plane perpendicularity and parallelism, and precision-shaft wobble. It also measures prism angle differences, flat-mirror parallelism errors, and angular errors between prisms or flat mirrors and mounting reference surfaces.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Objective Focal Length | 120mm |
| Effective Aperture | Φ28mm |
| Magnification | 6ˣ |
| Resolution | ≤6.2″ |
| Field of View | ≥7 °19 ′ |
| Reticle Graduation Value | 2’52"(0.1 mm) |
| Exit-pupil diameter | ≥Φ4 mm |
| Exit Pupil Distance | ≥17 mm |
| Eyepiece Adjustment Range | ±5 SD |
| Maximum Deviation Between Collimation Axis and Mechanical Axis | ≤15″ |
Datasheet
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