![]() Subjects like chemistry, physics and mathematics require a good sense of measurement if proper understanding is to be achieved. Ruler cm measurements can be used in schools for demonstration in different lessons. Carpenters, construction workers, and all practical artisans make use of rulers for measurements. ![]() Millimeter rulers are mostly seen in use for smaller lengths compared to metric rulers which are used in cases where the lengths are considerably longer. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.Designs of plastic protractor plastic protractor available vary from small rulers for small measurements to larger and longer rulers for use in broader scenarios. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it.
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