218 results
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Useful, easy, directions for seamen, who use Hadley's quadrant. Shewing, to the meanest capacity, how to hold the quadrant to take the Fore and the Back Observations of the Sun and of a Star; and the Meaning of the Observations. How to examine whether the Index-Glass, and the Fore and Back Horizon-Glasses, stand in a right Posture; and how to set them right when they do not stand right. The Meaning of what is called the Dip of the Horizon, or the Height of the Eye above the Water; and how to find it by the Quadrant. The Meaning of what is called the Resraction of the Air, and how to prove it. Many other very necessary Things, which every Seaman, who uses the Quadrant, should understand, if he be desirous of knowing the Meaning of what he is about. A Book of this Sort has been much desired by some Seamen, and it may be very useful to many.
Date: [1772]- Books
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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.
Blair, Robert, -1828.Date: 1788]- Books
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The description and use of a new sea quadrant, for Taking the Altitude of the Sun from the visible Horizon; Which is so contrived, That the Observer will be liable to no Interruption, or Inaccuracy from the Ship's Motion. And The Latitude at Sea, May be obtained with greater Certainty, and more frequently than by any Instrument of the like Kind hitherto made publick. Invented, Made, and Sold by George Adams, Mathematical Instrument Maker to His Majesty's Office of Ordnance, at Tycho Brahe's Head, the Corner of Racquet Court, in Fleetstreet, London. To which is added, The Description and Use of two Curious Methods for procuring an Artificial Horizon at Sea, To be used with Hadley's Quadrant; one by means of a Whirling Speculum; the other by a Floating Mirrour.
Adams, George, 1709-1772.Date: MDCCXLVIII. [1748]- Pictures
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Astronomy: a large observatory telescope at Hartwell House, with an astronomer using a transit telescope. Engraving by James Basire.
Date: 1851Reference: 46233i- Books
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The description and use of a portable instrument, vlugarly [sic] known by the name of Gunters quadrant : by which is perform'd most propositions in astronomy, as the altitude, azimuth, right ascention, and declination of the sun, &c. : also his rising, and setting and amplitude, together with the hour of the day or night, and other condusions exemplified at large : to which is added the use of Nepiars bones in multiplication, division, and extraction of roots, also the the nocturnal, the ring dial, and Gunters-line, in many necessary and delightful conclusions, fitted to the understanding of the meanest capacity : collected and digested into this portable volumn, for the use of young practitioners / by a true lover of the mathematicks.
Gunter, Edmund, 1581-1626Date: 1685- Books
A catalogue of European scientific instruments in the Department of Medieval and Later Antiquities of the British Museum / F.A.B. Ward.
British Museum. Department of Medieval and Later Antiquities.Date: [1981], ©1981- Books
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Tables of difference of latitude and departure: constructed to every quarter of a degree of the quadrant, and continued from one, to the distance of one hundred miles or chains.
Robertson, J. (John), 1712-1776.Date: M,DCC,XCIX. [1799]- Books
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May 1774. Description of a new universal equatoreal, made by Ramsden, with the method of adjusting it for observation.
Ramsden, J. (Jesse), 1735-1800.Date: 1774]- Archives and manuscripts
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MS Arabic 573
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Astronomy: a 40-foot telescope constructed by William Herschel, in use outdoors. Coloured etching, 18--.
Reference: 46257i- Books
L'uso della squadra mobile. Con la quale per teorica et per pratica si misura geometricamente ogni distanza, altezza e profondità, s'impara à perticare, livellare, et piglare in disegno, le città, paesi et provincie / Da Ottavis Fabri data in luce.
Fabri, Ottavio, active 1598.Date: 1598- Books
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The planetary instrument. Or The description and use of the theories of the planets : drawn in true proportion, either in one, or two plates, of eight inches diameter; by Walter Hayes, at the Cross-Daggers in Moor-Fields. Being excellent schemes ot help the conceptions of young astronomers; and ready instruments for finding the distances, longitudes, latitudes, aspects, directions, stations, and retrogradations of the planets; either mechanically, or arithmetically; with ease and speed. By Mr. John Palmer, rector of Ecton, and arch-deacon of Northampton.
Palmer, John, 1612-1679Date: [1685]- Books
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Collection de différens traités sur des instrumens d'astronomie, physique, &c. ... Par J. H. de Magellan, ...
Magalhães, João Jacinto de, 1722-1790.Date: 1780- Books
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A description & use of a large quadrant, contrived and made by H. Sutton : Accomodated with various lines, for the easie resolving of all astronomical, geometrical, and gnomonical problems, for working of proportions, and for finding the hour universally. Whereunto is added, The description and use of a geodætical scheme, and gnomonical instrument: the first shewing (by inspection) the dimensions of all geometrical bodies: the other is applied to gnomonical uses. Published by R. Morden.
Sutton, Henry (Mathematical instrument maker)Date: 1669- Archives and manuscripts
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MS Arabic 593
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Astronomy: a savant in his study, instructing a group of gentlemen. Engraving, 1748.
Date: 1748Reference: 46325i- Archives and manuscripts
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MS Arabic 377
- Archives and manuscripts
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MS Arabic 375
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The young gentleman and lady's philosophy, in a continued survey of the works of nature and art; by way of dialogue. ... . containing, The Philosophy of the Heavens and of the Atmosphere. Illustrated by Thirty-Three copper-plates. The second edition corrected. By Benjamin Martin.
Martin, Benjamin, 1705-1782.Date: MDCCLXXII. [1772]- Books
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The description and use of the astronomical rotula. Shewing The Change and Age of the Moon, the Motions and Places of the Sun, Moon, and Nodes in the Ecliptic; with the Times and Phases of all the Solar and Lunar Eclipses. By James Ferguson, F.R.S.
Ferguson, James, 1710-1776.Date: Printed in the Year MDCCLXXV. [1775]- Books
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The use of a mathematical instrument, called a quadrant : Shewing very plainly and easily to know the exact height or distance of any steeple, tree, or house, &c. Also to know the hour of the day by it: the height of the sun, moon, or stars: and to know the time of sun-rising and setting; and the length of every day in the year: the place of the sun in the ecliptick: the azimuth, right ascension, and declination of the sun. With many other necessary and delightful conclusions. Performed very readily. As also the use of a nocturnal: whereby you may learn to know the stars in heaven, and the hour of the night, by them. With many other delightful operations. The fourth edition, wherein the mistakes in the former impressions are corrected. By W.P.
W. PDate: 1670- Books
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The use of a mathematical instrument, called a quadrant : Shewing very plainly and easily to know the exact height or distance of any steeple, tree, or house, &c. Also to know the hour of the day by it: the height of the sun, moon, or stars: and to know the time of sun-rising and setting; and the length of every day in the year: the place of the sun in the ecliptick: the azimuth, right ascension, and declination of the sun. With many other necessary and delightful conclusions. Performed very readily. As also the use of a nocturnal: whereby you may learn to know the stars in heaven, and the hour of the night, by them. With many other delightful operations. The third edition, wherein the mistakes in the former impressions are corrected. By W.P.
W. PDate: 1665- Books
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The theory of Hadley's quadrant, or the rules for the construction and use of that instrument demonstrated. By the Reverend Mr. Ludlam.
Ludlam, William, 1717-1788.Date: M.DCC.LXXI. [1771]- Pictures
Mrs Margaret Bryan with her two daughters, about them various pieces of astronomical equipment. Engraving by W. Nutter after S. Shelley.
Shelley, Samuel, approximately 1750-1808.Reference: 544393i- Books
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This instrument is made only by Thomas Heath, at the Hercules, next to the Fountain Tavern in the Strand, having the patterns corrected by the translator.
Heath, Thomas, 1698-1773.Date: 1735?]