(1855). A gentleman engaged in astronomical pursuits is desirous of purchasing a second-hand transit-instrument of modern construction possessing something like the following requirements: --Size, 2 or Formula feet; aperture of object-glass, not less than Formula inches; portable iron stand; maker, Troughton and Simms, or Dollond; furnished with one or more moveable wire-micrometers. Monthly Notices of the Royal Astronomical Society, 16(2), 47-47. doi:10.1093/mnras/16.2.47a
MLA Zitierstil"A Gentleman Engaged in Astronomical Pursuits Is Desirous of Purchasing a Second-hand Transit-instrument of Modern Construction Possessing Something Like the Following Requirements: --Size, 2 or Formula Feet; Aperture of Object-glass, Not Less Than Formula Inches; Portable Iron Stand; Maker, Troughton and Simms, or Dollond; Furnished With One or More Moveable Wire-micrometers". Monthly Notices of the Royal Astronomical Society, 16.2 ( 1855 ): 47-47.