A Rare George V Silver Map Opisometer/ Meilograph

An extremely rare silver opisometer or meilograph from the reign of King George V. Opisometers are desirable items, used mainly for measuring curved lines on maps such as roads and rivers. Rarely found in hallmarked silver, this particular example has a attaching loop to the top for a Albert chain or similiar. A superb and interesting collector's piece with a practical use. Hallmarks :- Clear and readable. Maker :- John Henry Hill (1917-26). Date :- London C1920.