Our garden prisms are exact reproductions of those found aboard the Charles W. Morgan, America 39;s last All-Wooden whaleship, a national historic landmark preserved at mystic seaport. In the days before electricity, light below a vessels deck was limited to candles, oil and kerosene lamps. A clever solution for the light problem was the deck prism. Laid flush into the deck, the prism point drew light down below deck without weakening the planks.
Green available in two sizes: Small (3-1/4″h x 3″w): $21 & Large (4-1/2″h x 4″w): $32