A 19th-Century lacquered brass compound binocular microscope, signed on the stand C. COLLINS Optician 157 Gt. Portland St. LONDON, with rack and pinion coarse focusing, micrometer fine adjustment, prism, double nose-piece, mechanical circuit stage with engraved scale and rack adjustment, sub-stage condenser and plano-concave mirror, with accessories, including 6 eyepieces, polariser, ¼ Inch, ½ Inch, 1 Inch, 2 Inch, 3 Inch and 4 Inch objectives by Charles Collins, and other items, in mahogany case with brass carrying handle - 19½in. (49.5cm.) high.