A lacquered brass binocular microscope signed C.COLLINS Optician 77 Gt. Tichfield St. LONDON with eyepiece rack and pinion adjustment, double prism, double nosepiece, limb fine screw focusing, main rack and pinion focusing, mechanical square stage, swing arm plano-concave mirror on sliding collar on Y shaped foot in fitted mahogany case with accessories including a 'Webster Condenser' signed by C.Collins, and a Collins Graduating Diaphragm c.1870 - 17½in.(44.5cm)high