A 19th-century Society-of-Arts-pattern brass microscope,

细节
A 19th-century Society-of-Arts-pattern brass microscope,
unsigned, with rack and pinion focusing and fine adjustment, the stage with slide spring clips, wheel condenser and mirror, with horseshoe stand, forceps, live-box and specimen holder, in mahogany case with carrying handle (rear of case missing) -- 10¾in. (27.3cm.) high