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U (Simms)Troughton & Simms
Catalogue of Instruments made by Troughton and Simms ...
London, n.d. Bound with two other works under the title Simms's Instruments and Levelling: (1) Frederick W. Simms, A treatise on the principal mathematical instruments employed in Surveying, Levelling, and Astronomy ... (London, 1844); (2) this work; (3) Frederick W. Simms, A treatise on the principles and practice of Levelling ... (London, 1843).
[1967-247]
1844