Flat projection of the celestial sphere rotating with in an oval opening representing the observer's horizon. Philips' Planisphere: square cornered flat holder, with corner pierced for hanging, has gilt leather front and instructions printed on reverse. Holder contains round paperboard disk printed with constellations and various lettering (months, planets, etc.). TF 12/97.
Inscription/Sig.
Philips Planisphere/ Showing the principal stars/ Visible for every hour/ In the year.
