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A treatise on the principal mathematical instruments employed in surveying, levelling, and astronomy explaining their construction, adjustments, and use. With an appendix, and tables.

This book, "A treatise on the principal mathematical instruments", by Frederick Walter Simms, is a replication of a book originally published before 1844. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible.