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?]