A Beck oxidised brass and black enamelled compound monocular microscope, No. 18646, with a Cooke, Troughton & Simms camera attachment set in a Prontor shutter, rack-and-pinion focusing, micrometer fine focusing, electric alternative light source, mechanical square stage and plano-concave mirror on Y-shaped base -- 12in.(30cm.) high, with accessories in a fitted mahogany case