The Boreal Arrow 

Code BA17021501: Open-face Compass by Negretti & Zambra, c. 1880

This is a nice compass made by Negretti & Zambra around 1880. It comes in a gilt brass case in excellent condition without dings or dents. Only signs of aging. It has a SINGER'S PATENT mother-of-pearl dial is in excellent condition without hairlines or any kind of damage. It is clearly signed NEGRETTI & ZAMBRA, LONDON. The glass crystal is free of chips or scratches. The dial swings freely and finds North without any problem. The transit lock is activated by pushing the button under the loop. The dial is released when the button is pulled. The compass measures approximately 51mm in diameter. Nice and quality compass.