MPG.eBooks - Search Results - "Astronomical Instruments / Early Works To 1800"

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A description of an accurate and simple method of adjusting Hadley's quadrant for the back observation. By Mr. Robert Blair. Published by order of the Committee of Longitude

by Blair, Robert
Published 1788

Peter Elmsly

Subjects: “...Quadrants (Astronomical instruments) / Early works to 1800...”