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Description
English: Clock used to check mechanism of telescope clock seen in File:RK Young inspects observatory clock.jpg
Date
Source Clocks for new observatory telescope at Virtual Reference Library
Author Unknown authorUnknown author
Public domain
This Canadian work is in the public domain in Canada because its copyright has expired due to one of the following:
1. It was subject to Crown copyright and was first published more than 50 years ago, or

it was not subject to Crown copyright, and

2. it is a photograph that was created prior to January 1, 1949, or
3. the creator died prior to January 1, 1972.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.

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Date/TimeThumbnailDimensionsUserComment
current17:49, 7 October 2017Thumbnail for version as of 17:49, 7 October 2017600 × 1,856 (271 KB)Mindmatrix{{Information |Description={{en|Clock used to check mechanism of telescope clock seen in File:RK Young inspects observatory clock.jpg}} |Source=[http://www.virtualreferencelibrary.ca/detail.jsp?Entt=RDMDC-TSPA_0107845F&R=DC-TSPA_0107845F&searchPag...

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