"A Manual of the Protracting Trigonometer: With Its Application to Rectilinear Draughting and Plotting, Trigonometry, and Surveying" - Josiah Lyman, 1862, 77

"A Manual of the Protracting Trigonometer: With Its Application to Rectilinear Draughting and Plotting, Trigonometry, and Surveying" - Josiah Lyman, 1862, 77

"Hand-Book and Illustrated Catalogue of the Engineers' and Surveyors' Instruments of Precision" - C. L. Berger & Sons, 1910, 212

"Hand-Book and Illustrated Catalogue of the Engineers' and Surveyors' Instruments of Precision" - C. L. Berger & Sons, 1910, 212

"Handbook and Illustrated Catalogue of the Engineers' and Surveyors' Instruments" - C. L. Berger & Sons, 1884, 147

"Handbook and Illustrated Catalogue of the Engineers' and Surveyors' Instruments" - C. L. Berger & Sons, 1884, 147

Oughtred Society - Dedicated to the preservation and history of slide rules and other calculating instruments

Oughtred Society - Dedicated to the preservation and history of slide rules and other calculating instruments

"Mathematical Instruments: Their Constructions, Adjustment, Testing, and use, Etc.: Vol. 1 - Drawing and Measuring Instruments (157); Vol. 2 - Optical Instruments (141); Vol. 3 - Surveying and Astronomical Instruments (161)" - John Fry Heather, 1884

"Mathematical Instruments: Their Constructions, Adjustment, Testing, and use, Etc.: Vol. 1 - Drawing and Measuring Instruments (157); Vol. 2 - Optical Instruments (141); Vol. 3 - Surveying and Astronomical Instruments (161)" - John Fry Heather, 1884

"Treatise on Mathematical Instruments, 8th Ed." - John Fry Heather, 1866, 185

"Treatise on Mathematical Instruments, 8th Ed." - John Fry Heather, 1866, 185

"A Treatise on Mathematical Instruments, 2nd Ed." - John Fry Heather, 1851, 174

"A Treatise on Mathematical Instruments, 2nd Ed." - John Fry Heather, 1851, 174

"Catalogue and Price-List of Keuffel & Esser Co." - 1892, 295

"Catalogue and Price-List of Keuffel & Esser Co." - 1892, 295

"Catalogue of Keuffel & Esser Co., Manufacturers and Importers of Drawing Materials, Surveying Instruments, Etc." - 1921, 482

"Catalogue of Keuffel & Esser Co., Manufacturers and Importers of Drawing Materials, Surveying Instruments, Etc." - 1921, 482

"Lever des Plans et Nivellement" - Charles Lallemand et al., 1889, 703

"Lever des Plans et Nivellement" - Charles Lallemand et al., 1889, 703

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