Station pointer magnifier

Station pointer with 6.25 inch diameter circular scale and three arms. One arm marked N.D.2. Box is mahogany, lined with green baize. It contains three spare arms, 3 screws and a magnifier in a plastic case (orange) clipped into the lid. Box marked on the outside "ND2" Box has trade label for "Cary, Porter Ltd" dated in MS 25.7.47.