Read Old-Time Nautical Instruments (Classic Reprint)

Old-Time Nautical Instruments (Classic Reprint)

John Robinson

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Description:Excerpt from Old-Time Nautical InstrumentsBased on this instrument, by laying out the circle on a table, John Davis, the explorer, devised his quadrant in 1586. At first the observer used it by facing the sun, as the cross-staff had been used, but a better form was made later where the observer had the sun at his back. This instrument has been called by sailors jackass quad rant and, supposedly from its shape, hog yoke. In early books on navi gation it is called sea quadrant. The earlier form used by the observer standing back to the sun had a solid shade vane which slid along the smaller arc of the instrument. By adjusting this a little short of the sup posed altitude oi the sun and sighting the horizon through the minute hole in the sight vane until it was seen.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Old-Time Nautical Instruments (Classic Reprint). To get started finding Old-Time Nautical Instruments (Classic Reprint), you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

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ISBN: 0266186041

Description: Excerpt from Old-Time Nautical InstrumentsBased on this instrument, by laying out the circle on a table, John Davis, the explorer, devised his quadrant in 1586. At first the observer used it by facing the sun, as the cross-staff had been used, but a better form was made later where the observer had the sun at his back. This instrument has been called by sailors jackass quad rant and, supposedly from its shape, hog yoke. In early books on navi gation it is called sea quadrant. The earlier form used by the observer standing back to the sun had a solid shade vane which slid along the smaller arc of the instrument. By adjusting this a little short of the sup posed altitude oi the sun and sighting the horizon through the minute hole in the sight vane until it was seen.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Old-Time Nautical Instruments (Classic Reprint). To get started finding Old-Time Nautical Instruments (Classic Reprint), you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

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Old-Time Nautical Instruments (Classic Reprint)

Old-Time Nautical Instruments (Classic Reprint)

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