Edwardtroughton Collection

Telescope built by Edward Troughton.. Equatorial instrument (telescope) at Armagh made by Edward Troughton. Copperplate engraving by Wilson Lowry after a drawing by J

Universal equatorial instrument by Edward Troughton, . Universal equatorial instrument by Edward Troughton, English maker of astronomical instruments

Edward Troughtons mural circle.. Edward Troughtons mural circle. He was an English maker of astronomical instruments. Copperplate engraving by Wilson Lowry after a drawing by J. Farey Jr

Portable circle by Edward Troughton.. Portable circle by Edward Troughton, English maker of astronomical instruments. Copperplate engraving by Wilson Lowry after a drawing by J

Repeating circle without reflection by Edward Troughton.. Repeating circle without reflection by Edward Troughton, English maker of astronomical instruments

English reflecting circle by Edward Troughton.. English reflecting circle by Edward Troughton, maker of astronomical instruments. Copperplate engraving by Wilson Lowry after a drawing by J. Farey Jr

Optical micrometers of the 18th century.. Optical micrometers including Dr. Nevil Maskelyne s, Mr. Edward Troughtons and Dr. William Herschels lamp micrometer

Surveying levels or theodolites by Ramsden and Troughton.. Surveying levels or theodolites designed by Mr. Jesse Ramsden and Mr. Edward Troughton. Copperplate engraving by W

Edward Troughtons method of graduating a circle.. Astronomical equipment maker Edward Troughtons method of graduating a circle. Copperplate engraving by Wilson Lowry after a drawing by J. Farey Jr

Portable theodolite by Edward Troughton.. Portable theodolite by Edward Troughton. Copperplate engraving by W. Lowry after an Illustration by J

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