Zygo
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The Zygo Mark II is an interferometer.[1]

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The Zygo Mark II was manufactured by Zygo.[1]
The model name is the Zygo Mark II.[1]
The Mark II name is also used for a radio telescope at Jodrell Bank Observatory that was operated as part of an interferometer network.[2]
The following facts about the Mark II are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No specifications for the Mark II are on record.
Answerable by: an OEM datasheet, a cleanroom equipment inventory, or an engineer who operated or installed it
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the Mark II are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the Mark II are on record.
Answerable by: an OEM product catalog or an engineer who ordered or specified the tool
The control-system platform and OS era of the Mark II are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the Mark II are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
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Last updated Sep 28, 2026.
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