A Brief Description Of A New Invented, Small, yet Accurate Astronomical Quadrant : Particularly calculated for Curious Observations at Sea, But equally useful at Land : And That Either by day or by Night : Together with some useful Problems for finding the Latitude : In Failure of a Meridian Altitude [...] With maps of the Stars, laid down in a different, But more intelligible Manner than usual, and de-sign'd as a Guide to the Knowledge of them