Rare signed portable folding Andrew Ross Microscope.  C 1847-1859.  This microscope has the case and accessories.   Accessories in the case include Bulls eye condenser and base, 2 brass objective cases (1/4 inch and 1/8 inch).  The 1/8-inch objective case is empty and is the one mounted on the scope.  The ¼ inch case has the objective inside.  Also included are two eyepeieces, tweezers and live box.  The signature reads” A. Ross, London, No294”.  This signature places the microscope about 1847-1859.  Furthermore, the 1/8 inch objective has the date 1857.   The microscope stands about 12 1/2 inches tall collapsed to minimum height (31.75 cm).  Case dimensions are 10 inches long x 5 ½ inches wide x 3 ¾ inches high (25.4 cm x 13.97 cm x 9.52 cm).  Case has a crack on the lid that does not appear to weaken the structure of the lid.  Both sides of the double-sided mirror have some pitting.  The stage has working X-Y directional controls and there is a substage wheel that stops down the amount of light reaching the stage.