The D‑276 is one of the optional accessories for Davidson Optronics autocollimating alignment telescopes (e.g. models D‑275 and D‑277)
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Tip-and-tilt adjustment to finely orient the mounted instrument.
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Mounting either on an optical table (via 3-foot system) or using a standard threaded bore for optical stands.
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Designed to accommodate alignment telescopes with a 2.250″ barrel, likely including the D‑271 or D‑275 models.
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Built to be solid and stable for precision optical alignment tasks.



