A concise description of Dicas's portable eidouranion, or Astronomical lucernal; with particular directions for applying the apparatus belonging to it; and a summary dissertation on the various phenomena which it is designed to exhibit and illustrate. By John Clegg. The Lucernal is made and sold by M. Dicas, at her mathematical shop, bottom of Pool Lane, Liverpool.
Clegg, John, cartographer. | Date: [1797?]