Mahogany cased Van Heurck type monocular brass microscope, W Watson & Sons, 313 High Holborn, London, 9706, after 1891, black japanned stand and laquered fittings, rack and pinion coarse adjustments for calibrated draw tube and outer tube, two Males-Watson patent microns adjusters, square substage with x, y and rotation adjustment, similar adjustments to the light lens, double sided mirror, height 40cm, together with additional lenses.