Extremely Rare George V Silver Opisometer

An extremely rare silver opisometer from the reign of King George V. Opisometers is a desirable item, used mainly for measuring curved lines on maps such as roads and rivers. Rarely found in hallmarked silver, this is clearly the former possession of someone with standing and wealth. A superb and interesting collector's piece with practical use. Hallmarks:- Clear and readable. Maker:- John Henry Hill (1917-26). Date:- London c1920.