Surveying and Levelling Instruments, Theoretically and Practically Described. / For construction, qualities, selection, preservation, adjustments, and uses; with other apparatus and appliances used by civil engineers and surveyors in the field.

by William Ford Stanley

[22] Patent No. 1857, J. L Casartelli, May, 1874.

[23] Illustrated plate xv. Fig. 1., Geometrical Essays, John Adams, 1803.

[24] Pastorelli's patent, No. 2714, 1863.

[25] Hoffmann's patent, No. 2084, 1878.

[26] Geometria Subterranea, Voitel, 1686.

[27] Subterranean Surveying, Thos. Fenwick, Lockwood.

[28] Description and use of an Improved Reflecting and Refracting Telescope and Scales for Surveying, by William Green, 1778.

[29] La Tachéomètre, ou l'Art de Lever les Plans et de Faire les Nivellements, Paris, 1858.

[30] Tables Trigonométriques Centésimales, by J. L. Sanguet, Paris.

[31] Manual of the Theory and Practice of Topographical Surveying by Means of the Transit and Stadia, by J. B. Johnson. New York.