English, c. 1870, signed to the back of the large 'Y' shaped foot Ross London', standing on a large lacquered brass ‘Y’ shaped base with tall uprights supporting the body on massive trunnions with lock, large plano-concave mirror on unusual mechanical collar with engraved scale on column, fully mechanical stage with X-Y control, geared rotation, collar finely engraved in degrees, with rack and pinion focus, large mechanical stage with X-Y control, geared rotation via a control wheel to the side, stage engraved around the edge with a scale running form 0 – 360, with massive course focus wheels to the back of the body acting on rack work to the rear of a large rectangular bar, bar limb with dovetail to accept the Stevenson binocular body tubes complete with dust caps, body tube engraved over the mirror cover ‘J. SWIFT & SON, LONDON’ with large quadruple objective changer to nosepiece, accessories include; low power binocular eyepieces, medium power binocular eyepieces, 1inch Ross objective & can, 1/4inch Ross objective with correction collar & can, 1/2inch Ross objective & can with Leiberkuhn & correction collar, 1/6inch Ross objective & can, 1/12inch Ross objective with interchangeable immersion and dry front element & can, a fine Ross selenite substage and polariser, a plate compressor signed ‘Ross’, a Wenham-style parabolic condenser, a wheel of stops, a very large table bullseye condenser, all arranged on a turned mahogany base with a large glass dome, with original excerpt from ‘The Monthly Microscopical Journal’ titled ‘On an Erecting Binocular Microscope. By J. W. Stephenson, F.R.A.S., F.R.M.S. Actuary to the Equitable Assurance Society, dated August 1, 1870,’. Stand and dome measure 59cm tall.