This auction is for a vintage E.S.Ritchie brass liquid filled boat/ship compass made in Pembroke Massachusetts. It measures 8.5 inches across bottom, 5" across glass, & about 6.5" high. It changes as you change direction & has 2 untested lights for backlight. It has some tarnish around the center housing ring. I never tried to polish it or clean it. please ask any questions before bidding..U.S.shipping only. Thanks!