The Boreal Arrow 

Code BA150321741: Victorian Compass by Negretti & Zambra with MOP dial

This is a victorian compass made by the famous Negretti & Zambra of London c. 1890. It comes in a brass case in excellent condition without dings or dents. Only some scratches from use. The dial is mother-of-pearl, a variant of the Singer's Patent. It is marked NEGRETTI & ZAMBRA, LONDON. It is in excellent condition and rotates smoothly to find North without any problem. It can be locked when the compass is not in use by pushing the small button under the loop. Pulling the button would release the dial. The dial is covered with a flat glass crystal in excellent condition. It measures about 52mm in diameter.