TC25-184 VERNIER SURVEYING COMPASS. William L. Potts. 5" needle, lifting collar, silvered face with "W.L. Potts" and fleur-de-lis at north, "Bucks, Penn" at south. One original level at north, sighting vanes, original dial cover. Potts was born in New Jersey in 1771 and partnered with Benjamin Rittenhouse before setting up his own business. He is particularly known for the beauty of his elaborate engraving which is demonstrated on the face of this example. Good+ 250-500