c.1840, 21 compasses and other instruments in sterling silver, including three-legged dividers and ivory sector with scales for setting out sundials with silver arch hinge, middle tier includes a further 13 ivory scale rules and protractors including some later additions, the bottom layer with watercolours, palettes, architect's drawing pins, an ivory brush rest etc., all in velvet-lined, fitted, nickel-silver bound rosewood case, width 34cm; Note the proportional dividers alone are a later replacement by Elliott Brothers and are in nickel silver not sterling silver