LIEUTENANT COLONEL DAVID MASON’S GUNNER’S PERPENDICULAR AND CASE, C. 1776 A gunner’s perpendicular, perhaps made in Massachusetts. : LIEUTENANT COLONEL DAVID MASON'S GUNNER'S PERPENDICULAR AND Circumstance, C. 1776 A gunner's perpendicular, maybe made in Massachusetts, dating to the 2nd 50 percent with the 18th century, engraved to the decrease percentage https://meisterp389rga3.creacionblog.com/profile