Universal Plotting Sheets - Book

These are also known as VP-OS sheets. . A graduated circle printed at the center allows meridians of longitude to be constructed for any latitude, thus creating a custom-made chart for any geographical location. . Pad of 50 sheets - printed on both sides. 

Universal plotting sheets, also known as VP-OS sheets, let a navigator build a small-scale chart for any latitude, which is especially useful offshore when working celestial sight reductions or dead reckoning away from a printed chart. The graduated circle at the center is used to lay out meridians of longitude for the latitude in use. This Celestaire pad (Celestaire item 5910) holds 50 sheets printed on both sides, for 100 plotting surfaces in all.