Sutton- or Collins-type. Design by H. Sutton, published by John Collins in his book, "The sector on a quadrant", London, 1658. Quadrant is inverted Stoffler projection. Below quadrant, azimuths are labeled and divided every tenth degree. Fourteen stars indicated on projection by asterisks, letters of alphabet. Twenty-one stars radially listed on reverse. "Almanack" occupies upper part of quadrant. This is front piece from a copy of Collins' work.
