A great antique treen boxwood urn shaped lemon squeezer, which are not easy to find. It has a top that unscrews revealing a long wood screw with a flat and rounded disc on the end, the disc has been replaced, at some stage. This would crush the lemon, allowing the juice to come through the spout at the bottom. This lemon squeezer has a good colour and patina. 
Similar examples are illustrated on page 170 in Treen for the Table by Levi. 
C 1860