File:Alvan Clark 4 Inch Refractor Engraving.jpg

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Captions

Captions

This engraving, found on the back of an Alvan Clark 4 inch refractor, gives the date of manufacture (1882) and factory location in Cambridgeport, Massachusetts. Taken with permission at Rockford University.

Summary

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Description
English: This engraving, found on the back of an Alvan Clark 4 inch refractor, gives the date of manufacture (1882) and factory location in Cambridgeport, Massachusetts. Taken with permission at Rockford University.
Date
Source Own work
Author Blablabliam

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current01:57, 21 January 2022Thumbnail for version as of 01:57, 21 January 20223,024 × 4,032 (2.97 MB)Blablabliam (talk | contribs)Uploaded own work with UploadWizard

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