Apothecaries' scales Travelling apothecaries’ scale for weighing chemicals and pharmaceuticals, comprising brass pillar and balance with a single chained pan and a corresponding fork for a detachable pan or glass. Lever operated with a central pointer. Apparatus is mounted on a mahogany box with a single drawer containing two compartments, both lined with red velvet. The brass pan is inscribed: ‘H.MARTIN, MAKER READING.’ Inside are sets of weights. Thought to have previously belonged to Luke Howard FRS. c.1820-1840